Bridalveil Fall Bridge No. 3, Spanning Bridalveil Creek on carriage ro...
part of Yosemite National Park Roads and Bridges Recording Project, 1991; see HAER No. CA-117 for overview Significance: The three Bridalveil Fall bridges are the only surviving road bridges in the park dating ... More
Broadway Bridge, Spanning Mississippi River at Broadway Street, Minnea...
Significance: The Broadway Bridge was a four-span, wrought iron and steel, high through Pratt truss and was one of two known remaining decorative truss bridges in Minnesota. The bridge was fabricated by the Ki... More
Broadway Bridge, Spanning Mississippi River at Broadway Street, Minnea...
Significance: The Broadway Bridge was a four-span, wrought iron and steel, high through Pratt truss and was one of two known remaining decorative truss bridges in Minnesota. The bridge was fabricated by the Ki... More
Broadway Bridge, Spanning Mississippi River at Broadway Street, Minnea...
Significance: The Broadway Bridge was a four-span, wrought iron and steel, high through Pratt truss and was one of two known remaining decorative truss bridges in Minnesota. The bridge was fabricated by the Ki... More
Broadway Bridge, Spanning Mississippi River at Broadway Street, Minnea...
Significance: The Broadway Bridge was a four-span, wrought iron and steel, high through Pratt truss and was one of two known remaining decorative truss bridges in Minnesota. The bridge was fabricated by the Ki... More
Broadway Bridge, Spanning Mississippi River at Broadway Street, Minnea...
Significance: The Broadway Bridge was a four-span, wrought iron and steel, high through Pratt truss and was one of two known remaining decorative truss bridges in Minnesota. The bridge was fabricated by the Ki... More
Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...
Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More
Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...
Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More
Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...
Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More
Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...
Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More
Bennett's Mill Bridge, Spanning Tygart's Creek, East Tygart's Creek Ro...
Significance: The Bennett's Mill Bridge is the sole surviving Wheeler truss covered bridge in the United States. Patented in 1870 by Isaac H. Wheeler of Scioto County, Ohio, this unusual truss design never mad... More
Bennett's Mill Bridge, Spanning Tygart's Creek, East Tygart's Creek Ro...
Significance: The Bennett's Mill Bridge is the sole surviving Wheeler truss covered bridge in the United States. Patented in 1870 by Isaac H. Wheeler of Scioto County, Ohio, this unusual truss design never mad... More
Harrison Avenue Bridge, Spanning Roaring Brook & Central Scranton Expr...
Significance: The bridge, a monumental structure spanning Roaring Brook between East and South Scranton, is a symbol of the city's progressive era in the early 20th century. A citizen's association formed to ad... More
Laughery Creek Bridge, Spanning Laughery Creek, Aurora, Dearborn Count...
Significance: Triple-intersection Pratt through-truss bridge is an extremely rare survivor of its type and the oldest known metal truss bridge in Indiana. Unprocessed Field note material exists for this struct... More
Laughery Creek Bridge, Spanning Laughery Creek, Aurora, Dearborn Count...
Significance: Triple-intersection Pratt through-truss bridge is an extremely rare survivor of its type and the oldest known metal truss bridge in Indiana. Unprocessed Field note material exists for this struct... More
Washington Street Bridge, Spanning Spokane River at Washington Street,...
Significance: The Washington Street Bridge is an early example of reinforced concrete construction within the state. The ribbed concrete structure is a patented design of the nationally renowned bridge enginee... More
River Drive Overpass, Spanning River Drive (County Route No. 507) at U...
Significance: The River Drive Overpass is a typical example of a single span, multiple stringer, encased steel highway overpass built during the tenure of Morris Goodkind, chief bridge engineer for the New Jers... More
Bowen Mill Bridge, Spanning Pine River on County Trunk Highway AA, Ric...
Significance: The Bowen Mill Bridge is a Pratt through truss. It was erected in 1907, and re-erected at its present location in 1966. Of the thirty-two Pratt through truss bridges identified by the Wisconsin ... More
Morton's Highway Crossing, Spanning Amtrak on "O" Avenue, Oshtemo, Kal...
Significance: This is the oldest of only three concrete through arch bridges known to survive in Michigan and is one of the oldest concrete bridges of any type left in the state. The structure was determined e... More
Umpqua River Bridge, Spanning Umpqua River at Oregon Coast Highway, Re...
Significance: The Umpqua River Bridge is historically significant as one of the five Depression-era PWA bridges that connected the Oregon Coast Highway. The completion of these bridges is considered the dividi... More
Umpqua River Bridge, Spanning Umpqua River at Oregon Coast Highway, Re...
Significance: The Umpqua River Bridge is historically significant as one of the five Depression-era PWA bridges that connected the Oregon Coast Highway. The completion of these bridges is considered the dividi... More
Hominy Creek Bridge, Spanning Hominy Creek, Hominy, Osage County, OK
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Hominy Creek Bridge, Spanning Hominy Creek, Hominy, Osage County, OK
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Plattsmouth Bridge, Spanning Missouri River at U.S. Highway 34, Pacifi...
Significance: This bridge is historically significant as a regionally important vehicular crossing of the Missouri River and is the oldest extant Missouri River highway bridge in Iowa. Moreover, it is a unique... More
Merritt Parkway, Frenchtown Road Bridge, Spanning Merritt Parkway, Tru...
Significance: The bridges of the Merritt Parkway were predominately inspired by the Art Deco and Art Moderne architectural styles of the 1930s. Experimental forming techniques were employed to create the ornam... More
Andrew J. Sullivan Bridge, Spanning Cumberland River, Williamsburg, Wh...
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Flint Bridge, Spanning First Branch White River, Bicknell Hill Road, T...
Significance: Flint Bridge is a well-built example of the queenpost truss, an important style of timber framing with a history going back to the Middle Ages. The bridge is also significant because of the sympa... More
Flint Bridge, Spanning First Branch White River, Bicknell Hill Road, T...
Significance: Flint Bridge is a well-built example of the queenpost truss, an important style of timber framing with a history going back to the Middle Ages. The bridge is also significant because of the sympa... More
Davis Avenue Bridge, Spanning Woods Run Avenue at Davis Avenue, Pittsb...
Significance: The bridge is a cantilevered structure constructed for transportation, social, and municipal purposes. Constructed before Allegheny City was consolidated into greater Pittsburgh, the bridge repres... More
Davis Avenue Bridge, Spanning Woods Run Avenue at Davis Avenue, Pittsb...
Significance: The bridge is a cantilevered structure constructed for transportation, social, and municipal purposes. Constructed before Allegheny City was consolidated into greater Pittsburgh, the bridge repres... More
Second Street Bridge, Spanning Union Pacific Railroad lines, Little Ro...
Significance: Almost certainly designed by the bridge engineers of the Chicago, Rock Island and Pacific Railroad Company, the bridge over their lines at Second Street is one of the most important small bridges ... More
Second Street Bridge, Spanning Union Pacific Railroad lines, Little Ro...
Significance: Almost certainly designed by the bridge engineers of the Chicago, Rock Island and Pacific Railroad Company, the bridge over their lines at Second Street is one of the most important small bridges ... More
Mosel Avenue Bridge, Spanning Kalamazoo River on Mosel Avenue, Kalamaz...
Significance: This three span bridge, with an overall length of 210 feet, is the second longest surviving concrete camelback bridge designed by the Michigan State Highway Department. All spans are of standard ... More
Mosel Avenue Bridge, Spanning Kalamazoo River on Mosel Avenue, Kalamaz...
Significance: This three span bridge, with an overall length of 210 feet, is the second longest surviving concrete camelback bridge designed by the Michigan State Highway Department. All spans are of standard ... More
Hardin City Bridge, Pedestrian area beside County Road, Steamboat Rock...
Significance: Configured as a pin-connected Whipple (or double-intersection Pratt) through truss, the Hardin City Bridge is one of only eight such structures remaining in Iowa. It is the only bridge in Iowa by... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, Ne...
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th ce... More
Dallas-Oak Cliff Viaduct, Spanning Trinity River at Houston Street, Da...
Significance: At the time of its construction, the Dallas-Oak Cliff Viaduct at Houston Street was the longest reinforced concrete highway viaduct in the world, and it was the first high-level, all-weather cross... More
Dallas-Oak Cliff Viaduct, Spanning Trinity River at Houston Street, Da...
Significance: At the time of its construction, the Dallas-Oak Cliff Viaduct at Houston Street was the longest reinforced concrete highway viaduct in the world, and it was the first high-level, all-weather cross... More
Hot Springs Bridge, Spanning Bruneau River, Hot Springs Road, Bruneau,...
Picryl description: Public domain image of a river or lake, forest, trees, water stream, free to use, no copyright restrictions.
Virginia Department of Transportation Bridge No. 6023, Spanning Norfol...
Significance: Virginia Department of Transporation Bridge No. 6051 is a five-panel Pratt through truss bridge 73'-11 1/2" in length. Manufactured by the Keystone Bridge Company of Pittsburgh, Pennsylvania in 1... More
Virginia Department of Transportation Bridge No. 6023, Spanning Norfol...
Significance: Virginia Department of Transporation Bridge No. 6051 is a five-panel Pratt through truss bridge 73'-11 1/2" in length. Manufactured by the Keystone Bridge Company of Pittsburgh, Pennsylvania in 1... More
Apalachicola River Bridge, State Route 20 spanning the Apalachicola Ri...
Significance: This structure is significant as the first long-span steel bridge and first continuous truss bridge built in Florida. As the third bridge in the state to cross the Apalachicola River, a major wate... More
Apalachicola River Bridge, State Route 20 spanning the Apalachicola Ri...
Significance: This structure is significant as the first long-span steel bridge and first continuous truss bridge built in Florida. As the third bridge in the state to cross the Apalachicola River, a major wate... More
Apalachicola River Bridge, State Route 20 spanning the Apalachicola Ri...
Significance: This structure is significant as the first long-span steel bridge and first continuous truss bridge built in Florida. As the third bridge in the state to cross the Apalachicola River, a major wate... More
Apalachicola River Bridge, State Route 20 spanning the Apalachicola Ri...
Significance: This structure is significant as the first long-span steel bridge and first continuous truss bridge built in Florida. As the third bridge in the state to cross the Apalachicola River, a major wate... More
Bryant Station Bridge, Spanning Little River at County Route 275, Buck...
Significance: The Bryant Station Bridge is one of two surviving bridges employing a single-span pin-connected camelback through truss in Texas and one of five employing a camelback through truss. The bridge fe... More
Bryant Station Bridge, Spanning Little River at County Route 275, Buck...
Significance: The Bryant Station Bridge is one of two surviving bridges employing a single-span pin-connected camelback through truss in Texas and one of five employing a camelback through truss. The bridge fe... More
Highland Avenue & Baldwin Street Bridge, Spanning New Jersey Transit B...
Significance: The railroad over pass bridge is a contributing resource in the National Register-listed Glen Ridge Historic District, suburban community that developed in response to commuter rail service and is... More
Defiance Road Bridge, Spanning Femme Osage Creek on Defiance Road, Sai...
Significance: Defiance Road Bridge is a turn of the century pin-connected steel Pratt through-truss. Its significance lies in its importance as an example of the major bridge form used during the development o... More
Ferndale Road Bridge, Spanning Peshtigo River between Lake & Grover, W...
Significance: The Ferndale Road Bridge is one of the State's longest remaining examples of a Pratt overhead truss bridge. It was built shortly before the advent of the standardized construction methods of the ... More
Pithole Stone Arch Bridge, Spanning Pithole Creek at Eagle Rock Road (...
Significance: It is significant as a late 19th century example of a rural masonry bridge constructed at a time when most of its counterparts were built in the more common metal truss types. Although considered ... More
Walnut Street Railroad Bridge, Walnut Street over AMTRAK, Hartford, Ha...
Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.
Hopewell Bridge, Spanning Little Sandy River, Hopewell, Greenup County...
Survey number: HAER KY-36 Public domain photograph - historical image of Kentucky, United States, free to use, no copyright restrictions image - Picryl description
Prescott Bridge, Spanning Lamprey River on Prescott Road, Raymond, Roc...
Significance: The bridge is believed to be the sole surviving example of an I-beam through bridge with transverse jack arches extant in New Hampshire. Constructed in 1917. The bridge is the last example of a po... More
Kentucky Route 478 Bridge, Spanning Jellico Creek, Williamsburg, Whitl...
Significance: One of only three quadrangular, or double intersection, Warren through trusses in Kentucky. It is also the only Kentucky bridge constructed by the Capital Construction Company of Columbus, Ohio. ... More
Huffman Bridge, Spanning Catawba River, Morganton, Burke County, NC
Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.
Bridge Street Bridge, Spanning Grand River at Bridge Street, Portland,...
Significance: The Bridge Street Bridge in Portland is a rare two-span metal through truss, with two spans 100 feet in length, featuring decorative treatment at the end posts. This is the oldest known surviving... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Georgia DOT Bridge No. 201-00091-01541N, Spanning Big Drain Creek at S...
Significance: GDOT Bridge #201-00091-01541N is significant in the areas of transportation and engineering. It is a continuous-stringer type bridge. Continuous steel stringers are commonly found in Georgia. I... More
Bridalveil Creek Bridge, Spanning Bridalveil Creek on Glacier Point Ro...
Significance: Bridalveil Creek Bridge is one of two "rustic style" park bridges which appear to be of log construction. Actually, the structure has a steel I-beam and reinforced concrete deck, and the logs onl... More
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 & 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 & 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 & 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
Puente Rio Hondo, Spanning Hondo River on PR Road 156, Barrio Rio Hond...
Significance: The wrought iron, three-span truss bridge that carried Puerto Rico's coastal highway over Rio de la Plata, its longest and second largest river, was designed in 1868 and completed in 1876. Named ... More
Putnam County Bridge No. 111, Spanning Little Walnut Creek on County R...
Significance: The bridge is significant as an early Indiana example of a Daniel Luten designed filled spandrel arch concrete bridge. Survey number: HAER IN-100
Falls Bridge, Spanning Schuylkill River, connecting East & West River ...
Significance: The Falls Bridge is a unique and well-preserved example of the Petit through truss design, capable of carrying a roadway on both its upper and lower chords. The upper deck remains incomplete, but... More
Falls Bridge, Spanning Schuylkill River, connecting East & West River ...
Significance: The Falls Bridge is a unique and well-preserved example of the Petit through truss design, capable of carrying a roadway on both its upper and lower chords. The upper deck remains incomplete, but... More
Kentucky State Route 1032 Bridge, Spanning South Fork of Licking River...
Significance: A metal truss bridge consisting of two identical Pratt through trusses, constructed in 1906 by the Champion Bridge Company. Survey number: HAER KY-25 Building/structure dates: 1906 Initial Construction
East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...
Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More
East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...
Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More
East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...
Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More
Merritt Parkway, Merwins Lane Bridge, Fairfield, Fairfield County, CT
Significance: The bridges of the Merritt Parkway were predominately inspired by the Art Deco and Art Moderne architectural styles of the 1930s. Experimental forming techniques were employed to create the orname... More
Hamilton Street Dam, Lehigh River upstream of Hamilton Street Bridge, ...
Significance: The Hamilton Street Dam is an integral part of the Lehigh Canal, which was of major economic importance in the development of industry in the Lehigh Valley in the nineteenth century. The V-shaped... More
Hamilton Street Dam, Lehigh River upstream of Hamilton Street Bridge, ...
Significance: The Hamilton Street Dam is an integral part of the Lehigh Canal, which was of major economic importance in the development of industry in the Lehigh Valley in the nineteenth century. The V-shaped... More
Old Mill Road Bridge, Spanning Saucon Creek, Old Mill Road, Hellertown...
Significance: One of two existing pony-truss spans built by the Beckel Foundry. Both used variations of Francis C. Lowthorp's 23 June 1857 and 13 March 1860 patented cast lower-chord connections. The Old Mill... More
Chicago River Bascule Bridge, LaSalle Street, Spanning Chicago River a...
Significance: The development of the Chicago trunnoin bascule bridge occurred during the first three decades of the twentieth century. Despite the controversy over patent infringement Joseph E. Strauss charg... More
Honeydew Creek Bridge, Wilder Ridge Road, Honeydew, Humboldt County, C...
Significance: Honeydew Creek Bridge is the only known inverted Warren truss bridge in the State of California. On the basis of its unique design and architectural significance (per 36 CFR 60.6c) the bridge has... More
Chester Bridge, Spanning Rock River on Old Marsh Road, East Waupun, Do...
Significance: Chester Bridge is considered important in Wisconsin history because it is a type of bridge that is rapidly disappearing in the State, it is a link in the development of truss bridge construction, ... More
North Carolina Route 1392 Bridge, Spanning Tuckaseegee River, Dillsbor...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...
Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More
Wilson Shute Bridge, Spanning French Creek at State Road 2008 (formerl...
Significance: The Wilson Shute Bridge is one of the many civil engineering landmarks that document Pennsylvania's rich historic transportation heritage. As an example of a steel Pratt through truss, it represe... More
Headen Bridge, County Road 87, spanning Hiawassee River, Hiawassee, To...
Significance: Despite the corrosive forces of the natural elements, the Headen Bridge retains intact its original architectural configuration and functional components, and is an excellent example of an early t... More
McCord Creek Bridge, Spanning McCord Creek at Milepost 38.62 on Old Co...
Significance: The McCord Creek Bridge is associated with the Columbia River Highway, a National Historic Landmark. Built over a ten-year period (1913-1922), the Columbia River Highway is nationally significant ... More
Francois Chouteau Bridge, Spanning Missouri River at Chouteau Traffic ...
Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
Francois Chouteau Bridge, Spanning Missouri River at Chouteau Traffic ...
Public domain photograph - historical image of Missouri, United States, free to use, no copyright restrictions image - Picryl description
Francois Chouteau Bridge, Spanning Missouri River at Chouteau Traffic ...
Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.
Francois Chouteau Bridge, Spanning Missouri River at Chouteau Traffic ...
Public domain scan of a technical diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
Blackwell Bridge, Heardmont Vicinity, County Road 244, Heardmont, Elbe...
Significance: The Blackwell Bridge, a single-span, pin-connected Pratt through truss, is the largest remaining steel truss bridge in Elbert County. It was fabricated and erected by the Austin Brothers Bridge C... More
Blackwell Bridge, Heardmont Vicinity, County Road 244, Heardmont, Elbe...
Significance: The Blackwell Bridge, a single-span, pin-connected Pratt through truss, is the largest remaining steel truss bridge in Elbert County. It was fabricated and erected by the Austin Brothers Bridge C... More
Waddell "A" Truss Bridge, Spanning Lin Branch Creek, Trimble, Clinton ...
The address was changed to reflect that the bridge was moved from its original location (Spanning Linn Branch Creek, Trimble vicinity, Clinton County, Missouri) to Parkville, Missouri, in 1987. (March 2016) Si... More
Waddell "A" Truss Bridge, Spanning Lin Branch Creek, Trimble, Clinton ...
The address was changed to reflect that the bridge was moved from its original location (Spanning Linn Branch Creek, Trimble vicinity, Clinton County, Missouri) to Parkville, Missouri, in 1987. (March 2016) Si... More
Waddell "A" Truss Bridge, Spanning Lin Branch Creek, Trimble, Clinton ...
The address was changed to reflect that the bridge was moved from its original location (Spanning Linn Branch Creek, Trimble vicinity, Clinton County, Missouri) to Parkville, Missouri, in 1987. (March 2016) Si... More
Middle Bridge, Spanning Osage River, Warsaw, Benton County, MO
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Vermont Bridge No. 48, Spanning Winooski River at U.S. Route 2, Waterb...
Significance: The bridge is significant as a representative example of bridges constructed in the early 20th Century. During this time, the use of trusses dominated the bridge industry, replacing the variety o... More
Vermont Bridge No. 48, Spanning Winooski River at U.S. Route 2, Waterb...
Significance: The bridge is significant as a representative example of bridges constructed in the early 20th Century. During this time, the use of trusses dominated the bridge industry, replacing the variety o... More
Vermont Bridge No. 48, Spanning Winooski River at U.S. Route 2, Waterb...
Significance: The bridge is significant as a representative example of bridges constructed in the early 20th Century. During this time, the use of trusses dominated the bridge industry, replacing the variety o... More
Supple Ford Bridge, Spanning South Fork of Maquoketa River, Clay Mills...
Significance: The Jones County bowstring arch-truss bridge is a virtually intact example of a once-common technology in bridge design in Iowa, the bowstring bridge designed by the King Bridge Company of Clevela... More