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Mountain Home Veterans Administration  Medical Center, Johnson City, Washington County, TN

Mountain Home Veterans Administration Medical Center, Johnson City, W...

For additional documentation see HABS TN-254. Significance: It was established in 1901 as the Mountain Branch of the National Home for Disabled Volunteer Soldiers. The establishment of the Mountain Branch was b... More

Saluda County Bridge No. 4, Road S-26 spanning Clouds Creek, Jones Crossroads, Saluda County, SC

Saluda County Bridge No. 4, Road S-26 spanning Clouds Creek, Jones Cro...

Significance: The significance of the bridges lies not so much in its design, as in the fact that it is the only known Warren pony truss constructed in South Carolina by the Austin Brothers Bridge Company of At... More

Williamsburg Bridge, Spanning East River at South Sixth Street between New York City & Brooklyn, New York, New York County, NY

Williamsburg Bridge, Spanning East River at South Sixth Street between...

Significance: The Williamsburg Bridge is the longest span suspension bridge over the East River, its span exceeding that of the Brooklyn Bridge by 4.5 feet. Survey number: HAER NY-128 Building/structure dates... More

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex County, MA

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex Cou...

Significance: The City of Lowell is generally considered to be the birthplace of large-scale manufacturing in the U.S. Begun as a transportation canal, the Lowell Canal System evolved, during the 19th century,... More

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex County, MA

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex Cou...

Significance: The City of Lowell is generally considered to be the birthplace of large-scale manufacturing in the U.S. Begun as a transportation canal, the Lowell Canal System evolved, during the 19th century,... More

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex County, MA

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex Cou...

Significance: The City of Lowell is generally considered to be the birthplace of large-scale manufacturing in the U.S. Begun as a transportation canal, the Lowell Canal System evolved, during the 19th century,... More

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex County, MA

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex Cou...

Significance: The City of Lowell is generally considered to be the birthplace of large-scale manufacturing in the U.S. Begun as a transportation canal, the Lowell Canal System evolved, during the 19th century,... More

Boldman Bridge, Spanning Levisa Fork, Pikeville, Pike County, KY

Boldman Bridge, Spanning Levisa Fork, Pikeville, Pike County, KY

Significance: The Boldman Bridge is a rare surviving example of a swinging suspension bridge, which is a distinctive cultural feature of Eastern Kentucky. The east tower is original, constructed of I-beams and... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Queensboro Bridge, Spanning East river & Blackwell's Island, New York, New York County, NY

Queensboro Bridge, Spanning East river & Blackwell's Island, New York,...

Significance: At the time of construction, the Queensboro Bridge contained the longest cantilever span in America. Survey number: HAER NY-19 Building/structure dates: 1909 Initial Construction

Ponakin Road Bridge, Spanning Nashua River on Ponakin Road, Lancaster, Worcester County, MA

Ponakin Road Bridge, Spanning Nashua River on Ponakin Road, Lancaster,...

Significance: The single span Ponakin Road Bridge is 100 feet long and 20 feet wide, with vertical end posts. The bridge has diagonal compression members and diagonal eye-bar tension members that extend two pa... More

Ponakin Road Bridge, Spanning Nashua River on Ponakin Road, Lancaster, Worcester County, MA

Ponakin Road Bridge, Spanning Nashua River on Ponakin Road, Lancaster,...

Significance: The single span Ponakin Road Bridge is 100 feet long and 20 feet wide, with vertical end posts. The bridge has diagonal compression members and diagonal eye-bar tension members that extend two pa... More

Woodward Coal & Iron Company Furnace, Opossum Creek vicinity, Woodward, Jefferson County, AL

Woodward Coal & Iron Company Furnace, Opossum Creek vicinity, Woodward...

STORED OFF SITE AND ON SITE. mchr Significance: The Woodward Iron Company established the first iron furnace in the Bessemer area, and began operation of its first furnace in 1883. The Company later expanded t... More

Anaconda Historic District, Washoe Theater, 305 Main Street, Anaconda, Deer Lodge County, MT

Anaconda Historic District, Washoe Theater, 305 Main Street, Anaconda,...

Significance: Designed by B. Marcus Priteca, Architect, and built by Gus Forseen, Missoula contractor, the Washoe Theater opened to the public on September 24, 1936. Both the Theater's structural architecture ... More

Anaconda Historic District, Washoe Theater, 305 Main Street, Anaconda, Deer Lodge County, MT

Anaconda Historic District, Washoe Theater, 305 Main Street, Anaconda,...

Significance: Designed by B. Marcus Priteca, Architect, and built by Gus Forseen, Missoula contractor, the Washoe Theater opened to the public on September 24, 1936. Both the Theater's structural architecture ... More

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Significance: This handsome masonry building, minus its 1946 frame addition, is highly typical of canal-related mils in the region. Although it clearly reflects its proximity to the Union Canal, it occupied th... More

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Significance: This handsome masonry building, minus its 1946 frame addition, is highly typical of canal-related mils in the region. Although it clearly reflects its proximity to the Union Canal, it occupied th... More

Murtaugh Bridge, Murtaugh, Twin Falls County, ID

Murtaugh Bridge, Murtaugh, Twin Falls County, ID

Significance: This Pratt truss bridge was constructed in the early years of the twentieth century to provide north-south access across the Snake River. The need for River crossings increased as development of ... More

Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA

Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA

Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More

Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA

Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA

Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More

Northern Canal, Great River Wall, Lowell, Middlesex County, MA

Northern Canal, Great River Wall, Lowell, Middlesex County, MA

Significance: The Great River Wall is a massive retaining wall which separates the upper half of the Northern Canal from the Merrimack River. Survey number: HAER MA-8-B Building/structure dates: 1847 Initial ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

John S. Fogg Shoe Factory, 4-10 Union Street, Columbian Square, Weymouth, Norfolk County, MA

John S. Fogg Shoe Factory, 4-10 Union Street, Columbian Square, Weymou...

Significance: Weymouth history has been closely tied with that of shoemaking in Massachusetts, and, in the 19th century, "Weymouth Grade" was synonymous with high quality. By the 1760s, the town had left the h... More

Mott Rainbow Arch Bridge, Spanning Cannonball River, Mott, Hettinger County, ND

Mott Rainbow Arch Bridge, Spanning Cannonball River, Mott, Hettinger C...

Significance: This structure is one of only two reinforced concrete bridges known to exist in North Dakota in 1980. It is a good representative of the Marsh Rainbow Arch Bridge design. Survey number: HAER ND-... More

Mott Rainbow Arch Bridge, Spanning Cannonball River, Mott, Hettinger County, ND

Mott Rainbow Arch Bridge, Spanning Cannonball River, Mott, Hettinger C...

Significance: This structure is one of only two reinforced concrete bridges known to exist in North Dakota in 1980. It is a good representative of the Marsh Rainbow Arch Bridge design. Survey number: HAER ND-... More

Mott Rainbow Arch Bridge, Spanning Cannonball River, Mott, Hettinger County, ND

Mott Rainbow Arch Bridge, Spanning Cannonball River, Mott, Hettinger C...

Significance: This structure is one of only two reinforced concrete bridges known to exist in North Dakota in 1980. It is a good representative of the Marsh Rainbow Arch Bridge design. Survey number: HAER ND-... More

Northern Canal, Pawtucket & Ford Streets vicinity, Lowell, Middlesex County, MA

Northern Canal, Pawtucket & Ford Streets vicinity, Lowell, Middlesex C...

Significance: The Northern Canal was constructed to bring more water into the canal system in order that the demands for power made by increasingly large mills could be met. The Northern Canal supplemented the... More

American Woolen Company, East Canal Street, Winooski, Chittenden County, VT

American Woolen Company, East Canal Street, Winooski, Chittenden Count...

Significance: The Champlain Mill is a good representative example of late nineteenth century New England mill architecture. The structure is a four-story brick building, with slightly arched windows and corbel... More

Poughkeepsie Bridge, Spanning Hudson River, Poughkeepsie, Dutchess County, NY

Poughkeepsie Bridge, Spanning Hudson River, Poughkeepsie, Dutchess Cou...

Significance: Major 19th century cantilever bridge, located at an important crossing of the Hudson. Survey number: HAER NY-131 Building/structure dates: 1889 Initial Construction

Poughkeepsie Bridge, Spanning Hudson River, Poughkeepsie, Dutchess County, NY

Poughkeepsie Bridge, Spanning Hudson River, Poughkeepsie, Dutchess Cou...

Significance: Major 19th century cantilever bridge, located at an important crossing of the Hudson. Survey number: HAER NY-131 Building/structure dates: 1889 Initial Construction

Poughkeepsie Bridge, Spanning Hudson River, Poughkeepsie, Dutchess County, NY

Poughkeepsie Bridge, Spanning Hudson River, Poughkeepsie, Dutchess Cou...

Significance: Major 19th century cantilever bridge, located at an important crossing of the Hudson. Survey number: HAER NY-131 Building/structure dates: 1889 Initial Construction

Pawtucket Canal, Guard Locks, Lowell, Middlesex County, MA

Pawtucket Canal, Guard Locks, Lowell, Middlesex County, MA

Significance: The Guard Locks were the first set of locks constructed in the Lowell System which are still in existence. They have, however, been altered and added to since first put into use. The Guard Locks... More

Pawtucket Canal, Guard Locks, Lowell, Middlesex County, MA

Pawtucket Canal, Guard Locks, Lowell, Middlesex County, MA

Significance: The Guard Locks were the first set of locks constructed in the Lowell System which are still in existence. They have, however, been altered and added to since first put into use. The Guard Locks... More

Union Canal Locks, Bernville, Berks County, PA

Union Canal Locks, Bernville, Berks County, PA

Significance: The ruins of these locks document 19th-century canal technology, and illustrate the importance of water transportation in the first half of the century. Although the Union Canal failed to become ... More

Union Canal Locks, Bernville, Berks County, PA

Union Canal Locks, Bernville, Berks County, PA

Significance: The ruins of these locks document 19th-century canal technology, and illustrate the importance of water transportation in the first half of the century. Although the Union Canal failed to become ... More

Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Middlesex County, MA

Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...

Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More

Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Middlesex County, MA

Pawtucket Canal, Swamp Locks, Pawtucket & Merrimack Canals, Lowell, Mi...

Significance: The Swamp Locks complex consists of a flight of two navigation locks with a dam at the west end of the upper lock. The original locks opened in 1797, and were rebuilt in 1822-1823 when this confi... More

Continental Gin Company, Prattville, Autauga County, AL

Continental Gin Company, Prattville, Autauga County, AL

Significance: The site was acquired by Daniel Pratt in 1838, and he soon established grist and lumber and shingle mills there. By 1844, he had opened a cotton gin plant, the products of which were in great dem... More

Continental Gin Company, Prattville, Autauga County, AL

Continental Gin Company, Prattville, Autauga County, AL

Significance: The site was acquired by Daniel Pratt in 1838, and he soon established grist and lumber and shingle mills there. By 1844, he had opened a cotton gin plant, the products of which were in great dem... More

Continental Gin Company, Prattville, Autauga County, AL

Continental Gin Company, Prattville, Autauga County, AL

Significance: The site was acquired by Daniel Pratt in 1838, and he soon established grist and lumber and shingle mills there. By 1844, he had opened a cotton gin plant, the products of which were in great dem... More

Continental Gin Company, Prattville, Autauga County, AL

Continental Gin Company, Prattville, Autauga County, AL

Significance: The site was acquired by Daniel Pratt in 1838, and he soon established grist and lumber and shingle mills there. By 1844, he had opened a cotton gin plant, the products of which were in great dem... More

Boston Water Works, Fisher Hill Reservoir & Gatehouse, Fisher Avenue, Brookline, Norfolk County, MA

Boston Water Works, Fisher Hill Reservoir & Gatehouse, Fisher Avenue, ...

Significance: The Fisher Hill reservoir was built in 1887 to the designs of city architect Arthur Vinal, who also designed the High Service Pumping Station, a few hundred yards distant in Brighton, at the same ... More

Hamilton Canal, Wasteway Gatehouse, Lowell, Middlesex County, MA

Hamilton Canal, Wasteway Gatehouse, Lowell, Middlesex County, MA

Significance: The existing gatehouse as built in 1872 to replace the original gatehouse, which had been constructed in 1850. The original equipment for operating the gate is still in existence. Survey number:... More

Anaconda Historic District, Butte, Anaconda & Pacific Railway: General Offices, 300 West Commercial Avenue, Anaconda, Deer Lodge County, MT

Anaconda Historic District, Butte, Anaconda & Pacific Railway: General...

Significance: The General Offices of the B, A & P Railway formerly served as the passenger depot and dispatchers office for this rail operation. Built in 1898, the two-story brick structure has rusticated gran... More

Anaconda Historic District, Park & Commercial Streets, Main Street vicinity, Anaconda, Deer Lodge County, MT

Anaconda Historic District, Park & Commercial Streets, Main Street vic...

Significance: Anaconda was established in 1885 by Marcus Daly on Warm Springs Creek, as the site of the smelter for the Amalgamated Copper Mining Company. The site was selected for its proximity to the mines a... More

Anaconda Historic District, Park & Commercial Streets, Main Street vicinity, Anaconda, Deer Lodge County, MT

Anaconda Historic District, Park & Commercial Streets, Main Street vic...

Significance: Anaconda was established in 1885 by Marcus Daly on Warm Springs Creek, as the site of the smelter for the Amalgamated Copper Mining Company. The site was selected for its proximity to the mines a... More

Wiessner Brewery, 1700 North Gay Street, Baltimore, Independent City, MD

Wiessner Brewery, 1700 North Gay Street, Baltimore, Independent City, ...

Significance: Built by brewmaster John Frederick Wiessner (1831-1897) to replace his older, smaller brewery of 1863 on the same site. The flamboyant brewhouse, the complex's overwhelmingly distinctive feature a... More

Wiessner Brewery, 1700 North Gay Street, Baltimore, Independent City, MD

Wiessner Brewery, 1700 North Gay Street, Baltimore, Independent City, ...

Significance: Built by brewmaster John Frederick Wiessner (1831-1897) to replace his older, smaller brewery of 1863 on the same site. The flamboyant brewhouse, the complex's overwhelmingly distinctive feature a... More

Anaconda Reduction Department, Southeast side of Warm Springs Valley, Anaconda, Deer Lodge County, MT

Anaconda Reduction Department, Southeast side of Warm Springs Valley, ...

Significance: The Foundry Department of the Anaconda Reduction Department was organized as an independent venture in the late 1880s. Originally known as the Anaconda Hardware Company - dealers in stoves, iron, ... More

Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex County, MA

Eastern Canal, Bridge & Armory Streets vicinity, Lowell, Middlesex Cou...

Significance: The opening of the Eastern Canal in 1835 marked the end of the second phase of construction of the Lowell Canal System as it had been planned in 1821. The Eastern Canal connected the Pawtucket an... More

Moody Street Feeder, Gatehouse, Moody Street Feeder & Merrimack Canal, Lowell, Middlesex County, MA

Moody Street Feeder, Gatehouse, Moody Street Feeder & Merrimack Canal,...

Significance: The Moody Street Feeder Gatehouse contains manually controlled equipment for operating the sluice gates which were used to control the flow of water through the Moody Street Feeder. Survey number... More

George Washington Bridge, Spanning Hudson River between Manhattan & Fort Lee, NJ, New York, New York County, NY

George Washington Bridge, Spanning Hudson River between Manhattan & Fo...

Significance: At the time of its construction, the George Washington Bridge was the longest span suspension bridge in the world. Survey number: HAER NY-129

George Washington Bridge, Spanning Hudson River between Manhattan & Fort Lee, NJ, New York, New York County, NY

George Washington Bridge, Spanning Hudson River between Manhattan & Fo...

Significance: At the time of its construction, the George Washington Bridge was the longest span suspension bridge in the world. Survey number: HAER NY-129

George Washington Bridge, Spanning Hudson River between Manhattan & Fort Lee, NJ, New York, New York County, NY

George Washington Bridge, Spanning Hudson River between Manhattan & Fo...

Significance: At the time of its construction, the George Washington Bridge was the longest span suspension bridge in the world. Survey number: HAER NY-129

George Washington Bridge, Spanning Hudson River between Manhattan & Fort Lee, NJ, New York, New York County, NY

George Washington Bridge, Spanning Hudson River between Manhattan & Fo...

Significance: At the time of its construction, the George Washington Bridge was the longest span suspension bridge in the world. Survey number: HAER NY-129

Person County Bridge No. 35, Spanning South Flat River at State Route 1120, Hurdle Mills, Person County, NC

Person County Bridge No. 35, Spanning South Flat River at State Route ...

Significance: The Person County Bridge No. 35 was built in the early teens by the Champion Bridge Company of Wilmington, Ohio. It spans 83 feet and is divided into five equal panels. The trusses contain the c... More

Baltimore & Ohio Railroad, Long Bridge, Keedysville, Washington County, MD

Baltimore & Ohio Railroad, Long Bridge, Keedysville, Washington County...

The B&O Railroad was authorized to abandon the bridge and the portion of the Hagerstown Branch on which the bridge was located in 1978. Significance: This bridge is one of the longest on the Baltimore and Ohio ... More

Mountain Home Veterans Administration  Medical Center, Johnson City, Washington County, TN

Mountain Home Veterans Administration Medical Center, Johnson City, W...

For additional documentation see HABS TN-254. Significance: It was established in 1901 as the Mountain Branch of the National Home for Disabled Volunteer Soldiers. The establishment of the Mountain Branch was b... More

Mountain Home Veterans Administration  Medical Center, Johnson City, Washington County, TN

Mountain Home Veterans Administration Medical Center, Johnson City, W...

For additional documentation see HABS TN-254. Significance: It was established in 1901 as the Mountain Branch of the National Home for Disabled Volunteer Soldiers. The establishment of the Mountain Branch was b... More

Williamsburg Bridge, Spanning East River at South Sixth Street between New York City & Brooklyn, New York, New York County, NY

Williamsburg Bridge, Spanning East River at South Sixth Street between...

Significance: The Williamsburg Bridge is the longest span suspension bridge over the East River, its span exceeding that of the Brooklyn Bridge by 4.5 feet. Survey number: HAER NY-128 Building/structure dates... More

Williamsburg Bridge, Spanning East River at South Sixth Street between New York City & Brooklyn, New York, New York County, NY

Williamsburg Bridge, Spanning East River at South Sixth Street between...

Significance: The Williamsburg Bridge is the longest span suspension bridge over the East River, its span exceeding that of the Brooklyn Bridge by 4.5 feet. Survey number: HAER NY-128 Building/structure dates... More

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex County, MA

Lowell Canal System, Merrimack & Concord Rivers, Lowell, Middlesex Cou...

Significance: The City of Lowell is generally considered to be the birthplace of large-scale manufacturing in the U.S. Begun as a transportation canal, the Lowell Canal System evolved, during the 19th century,... More

Chow Chow Suspension Bridge, Spanning Quinault River, Taholah, Grays Harbor County, WA

Chow Chow Suspension Bridge, Spanning Quinault River, Taholah, Grays H...

Significance: The Chow Chow Suspension Bridge was constructed by Native Americans living on the Quinault Indian Reservation about 1950. It consists of four timber king post trusses that are suspended from stee... More

E. & T. Fairbanks & Company, Two-Story Covered Bridge, Saint Johnsbury, Caledonia County, VT

E. & T. Fairbanks & Company, Two-Story Covered Bridge, Saint Johnsbury...

Significance: This wooden lattice truss bridge with auxiliary arches was originally built in about 1876, but the second story added at a later date. The bridge, which spans Sleepers River, connects factory bui... More

Boldman Bridge, Spanning Levisa Fork, Pikeville, Pike County, KY

Boldman Bridge, Spanning Levisa Fork, Pikeville, Pike County, KY

Significance: The Boldman Bridge is a rare surviving example of a swinging suspension bridge, which is a distinctive cultural feature of Eastern Kentucky. The east tower is original, constructed of I-beams and... More

Big Four Bridge, Spanning Ohio River, Louisville, Jefferson County, KY

Big Four Bridge, Spanning Ohio River, Louisville, Jefferson County, KY

Significance: The Big Four Bridge as it exists today consists of six spans, three Baltimore truss spans and three Parker through trusses. There are two approach spans on the south and one on the north end of t... More

Big Four Bridge, Spanning Ohio River, Louisville, Jefferson County, KY

Big Four Bridge, Spanning Ohio River, Louisville, Jefferson County, KY

Significance: The Big Four Bridge as it exists today consists of six spans, three Baltimore truss spans and three Parker through trusses. There are two approach spans on the south and one on the north end of t... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worcester County, MA

Atherton Bridge, Spanning Nashua River on Bolton Road, Lancaster, Worc...

Significance: The Atherton Bridge is an example of a hybrid pony-truss that bears a similarity to the Post truss. The bridge is 72 feet long, 18 1/2 feet wide, and is comprised of eight panels. It rests on gr... More

Queensboro Bridge, Spanning East river & Blackwell's Island, New York, New York County, NY

Queensboro Bridge, Spanning East river & Blackwell's Island, New York,...

Significance: At the time of construction, the Queensboro Bridge contained the longest cantilever span in America. Survey number: HAER NY-19 Building/structure dates: 1909 Initial Construction

Queensboro Bridge, Spanning East river & Blackwell's Island, New York, New York County, NY

Queensboro Bridge, Spanning East river & Blackwell's Island, New York,...

Significance: At the time of construction, the Queensboro Bridge contained the longest cantilever span in America. Survey number: HAER NY-19 Building/structure dates: 1909 Initial Construction

Ponakin Road Bridge, Spanning Nashua River on Ponakin Road, Lancaster, Worcester County, MA

Ponakin Road Bridge, Spanning Nashua River on Ponakin Road, Lancaster,...

Significance: The single span Ponakin Road Bridge is 100 feet long and 20 feet wide, with vertical end posts. The bridge has diagonal compression members and diagonal eye-bar tension members that extend two pa... More

Anaconda Historic District, Washoe Theater, 305 Main Street, Anaconda, Deer Lodge County, MT

Anaconda Historic District, Washoe Theater, 305 Main Street, Anaconda,...

Significance: Designed by B. Marcus Priteca, Architect, and built by Gus Forseen, Missoula contractor, the Washoe Theater opened to the public on September 24, 1936. Both the Theater's structural architecture ... More

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Significance: This handsome masonry building, minus its 1946 frame addition, is highly typical of canal-related mils in the region. Although it clearly reflects its proximity to the Union Canal, it occupied th... More

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Pleasant Valley Roller Mill, Gruber Road, Bernville, Berks County, PA

Significance: This handsome masonry building, minus its 1946 frame addition, is highly typical of canal-related mils in the region. Although it clearly reflects its proximity to the Union Canal, it occupied th... More

McPherson Bridge, Spanning Candies Creek at County Road A165, Eureka, Bradley County, TN

McPherson Bridge, Spanning Candies Creek at County Road A165, Eureka, ...

Significance: Most features of the bridge are representative of truss bridges. The vertical members are paired angles with double lacing. The counters and diagonals are I-bars or tie-rods. The top chords and en... More

Murtaugh Bridge, Murtaugh, Twin Falls County, ID

Murtaugh Bridge, Murtaugh, Twin Falls County, ID

Significance: This Pratt truss bridge was constructed in the early years of the twentieth century to provide north-south access across the Snake River. The need for River crossings increased as development of ... More

Murtaugh Bridge, Murtaugh, Twin Falls County, ID

Murtaugh Bridge, Murtaugh, Twin Falls County, ID

Significance: This Pratt truss bridge was constructed in the early years of the twentieth century to provide north-south access across the Snake River. The need for River crossings increased as development of ... More

Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA

Pawtucket Canal, Lower Locks, Lowell, Middlesex County, MA

Significance: The Lower Locks are comprised of two navigation locks and a dam, with a head of 17 feet. They were some of the earliest locks in the Lowell Canal System, originally constructed in the first phase... More

Mitchell-Griggs Road Bridge, Spannning Caney Fork on Mitchell-Griggs Road, Dixon, Webster County, KY

Mitchell-Griggs Road Bridge, Spannning Caney Fork on Mitchell-Griggs R...

Significance: The Mitchell-Griggs Road Bridge is an early riveted Warren pony truss, built on a slight skew. Survey number: HAER KY-6 Building/structure dates: 1925 Initial Construction Building/structure da... More

North Fork Bridge, Spanning North Fork of Licking River, Milford, Bracken County, KY

North Fork Bridge, Spanning North Fork of Licking River, Milford, Brac...

Significance: The North Fork Bridge is the oldest dated Pratt through truss bridge in Kentucky, and one of two built by the Smith Bridge Company in the state of Kentucky. Survey number: HAER KY-2 Building/str... More

Longfellow Bridge, Spanning Charles River at Main Street, Boston, Suffolk County, MA

Longfellow Bridge, Spanning Charles River at Main Street, Boston, Suff...

Significance: The chief monument of the Charles River Basin and the structure which does more than any other to formalize the planning of the river is the Longfellow Bridge, designed, the bridge commissioners w... More

Longfellow Bridge, Spanning Charles River at Main Street, Boston, Suffolk County, MA

Longfellow Bridge, Spanning Charles River at Main Street, Boston, Suff...

Significance: The chief monument of the Charles River Basin and the structure which does more than any other to formalize the planning of the river is the Longfellow Bridge, designed, the bridge commissioners w... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

Thames Tow Boat Company, Foot of Farnsworth Street, New London, New Lo...

Significance: The Thames Shipyard has been in constant use from the time of its completion in 1903 to the present (as of 1978). Originally constructed to build and repair ocean-going tugs and barges, the yard ... More

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