Rock Run Furnace & Town, County Road 12, Rock Run, Cherokee County, AL
Significance: The town of Rock Run, primarily built to house and support the employees of the Rock Run furnace, is typical of the industrial towns scattered through the South at the turn of the century. While ... More
Pennsylvania Railway Ore Dock, Lunch-Shower Building, Lake Erie at Whi...
Survey number: HAER OH-18-C Building/structure dates: 1911-1912 Initial Construction
Occident Terminal Elevator & Storage Annex, South side of second slip,...
Survey number: HAER MN-96 Building/structure dates: 1923 Initial Construction Building/structure dates: 1930 Initial Construction Building/structure dates: 1980 Subsequent Work Building/structure dates: 199... More
Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Por...
Significance: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, an... More
Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Por...
Significance: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, an... More
Bourbon Iron Furnace, Owingsville, Bath County, KY
Unprocessed Field note material exists for this structure: N1349 Survey number: HAER KY-38 Building/structure dates: 1987
Trinity River Bridge, Spanning Trinity River at East Belknap Street (U...
Significance: This structure, which exhibits several unique design elements, is one of only four known examples of a reinforced concrete cantilever span bridge constructed by the Texas Highway Department. Alon... More
Trinity River Bridge, Spanning Trinity River at East Belknap Street (U...
Significance: This structure, which exhibits several unique design elements, is one of only four known examples of a reinforced concrete cantilever span bridge constructed by the Texas Highway Department. Alon... More
Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...
Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More
Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...
Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More
Pittsburgh Wool Company, 1230 River Avenue, Pittsburgh, Allegheny Coun...
Significance: Occupying a historic former tannery in a part of Pittsburgh, Pennsylvania once defined by the leather industry, the Pittsburgh Wool Company was the last operational wool pullery in the U.S. Unpro... More
North Bosque River Bridge, Spanning North Bosque River at State Highwa...
Significance: The North Bosque River bridge is a fine example of the Texas Highway Department's development of standard bridge designs. The rise of state highway departments marks the decline of the entreprene... More
North Avenue Bridge, Spanning North Branch of Chicago River at West No...
Significance: When Chicago became a major commercial and industrial center after the Civil War, the most common American drawbridge was the swing bridge, horizontally rotating on a center pier to open two navig... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-6, Spanning North ...
Significance: The Milwaukee Road's Bridge No. Z-6 may be the only one of its kind ever built, defying the conventional categories of center-bearing and rim-bearing swing bridges. This ingenious design answers ... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-6, Spanning North ...
Significance: The Milwaukee Road's Bridge No. Z-6 may be the only one of its kind ever built, defying the conventional categories of center-bearing and rim-bearing swing bridges. This ingenious design answers ... More
Memphis & Charleston Freight Depot, 330 Church Street Northwest, Hunts...
Significance: The freight depot, erected in 1856, is one of the oldest surviving rail facilities in Alabama. Its Italianate architecture is typical of other commercial buildings of the era. / The depot compris... More
Memphis & Charleston Freight Depot, 330 Church Street Northwest, Hunts...
Significance: The freight depot, erected in 1856, is one of the oldest surviving rail facilities in Alabama. Its Italianate architecture is typical of other commercial buildings of the era. / The depot compris... More
Burnside Bridge, Spanning Willamette River at Burnside Street, Portlan...
Significance: Burnside Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River, and one of five Portland span bridges (with Ross Island Bridge, Sellwood Bridge, Lovej... More
Chicago River Bascule Bridge, Monroe Street, Spanning South Branch of ...
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
Passerelle in Lincoln Park, Spanning North Lake Shore Drive (U.S. Rout...
Significance: This pedestrian bridge, or passerelle, is the only one spanning North Lake Shore Drive, a major commuter route through Chicago's Lincoln Park. The strikingly modern welded steel arch with concret... More
Mount Savage Iron Furnace, Junction of U.S. Route 60 & State Route 1, ...
Unprocessed Field note material exists for this structure: N1352 Survey number: HAER KY-41 Building/structure dates: 1987
St. Charles Air Line Bridge, Spanning South Branch of Chicago River, n...
Significance: Like all Strauss heel-trunnion bascule bridges, the St. Charles Air Line Bridge rotates vertically, lifting to clear the river it spans. This particular bridge is unique, however, in that its des... More
Kelley Crossing Bridge, Spanning Plum Creek at County Route 186, Lockh...
Biography of William Payson is included as addendum to original documentation. Significance: The Kelley Crossing Bridge is one of two lenticular trusses that survive in Caldwell County and one of a cluster of e... More
Kelley Crossing Bridge, Spanning Plum Creek at County Route 186, Lockh...
Biography of William Payson is included as addendum to original documentation. Significance: The Kelley Crossing Bridge is one of two lenticular trusses that survive in Caldwell County and one of a cluster of e... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Vicksburg & Brunswick Depot, South Randolph Avenue, Eufaula, Barbour C...
Significance: Built in 1872, the Vicksburg & Brunswick passenger and freight depot's Italianate architecture is representative of attractive railroad structures built in the immediate post-Civil War era as the ... More
Sellwood Bridge, Spanning Willamette River at Southeast Tacoma Street,...
Significance: The Sellwood Bridge, the busiest two-lane bridge in Oregon, is the southern-most span in an ensemble of twelve monumental highway bridges across the lower Willamette River at Portland, Oregon. Th... More
Sellwood Bridge, Spanning Willamette River at Southeast Tacoma Street,...
Significance: The Sellwood Bridge, the busiest two-lane bridge in Oregon, is the southern-most span in an ensemble of twelve monumental highway bridges across the lower Willamette River at Portland, Oregon. Th... More
Chicago River Bascule Bridge, Wabash Avenue, Spanning Chicago River at...
Significance: In 1930 the Wabash Bridge was awarded the American Institute of Steel Construction prize for "Most Beautiful." Survey number: HAER IL-48 Building/structure dates: 1930 Initial Construction
Chicago River Bascule Bridge, Wabash Avenue, Spanning Chicago River at...
Significance: In 1930 the Wabash Bridge was awarded the American Institute of Steel Construction prize for "Most Beautiful." Survey number: HAER IL-48 Building/structure dates: 1930 Initial Construction
Chicago River Bascule Bridge, Wabash Avenue, Spanning Chicago River at...
Significance: In 1930 the Wabash Bridge was awarded the American Institute of Steel Construction prize for "Most Beautiful." Survey number: HAER IL-48 Building/structure dates: 1930 Initial Construction
Chicago River Bascule Bridge, Wabash Avenue, Spanning Chicago River at...
Significance: In 1930 the Wabash Bridge was awarded the American Institute of Steel Construction prize for "Most Beautiful." Survey number: HAER IL-48 Building/structure dates: 1930 Initial Construction
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rock Run Furnace & Town, County Road 12, Rock Run, Cherokee County, AL
Significance: The town of Rock Run, primarily built to house and support the employees of the Rock Run furnace, is typical of the industrial towns scattered through the South at the turn of the century. While ... More
South Bridge, Spanning Jackson Park Lagoon at South Lake Shore Drive (...
Significance: In 1894, the South Park Commission, administrator of Chicago's south side park system, retained the Boston-area landscape architecture firm of Olmsted, Olmsted and Eliot to refurbish Jackson Park,... More
Pennsylvania Railway Ore Dock, Lunch-Shower Building, Lake Erie at Whi...
Survey number: HAER OH-18-C Building/structure dates: 1911-1912 Initial Construction
Rock Church Suspension Bridge, Spanning Paluxy River, Tolar, Hood Coun...
Significance: One of the remaining vernacular suspension bridges in Texas, the Rock Church bridge is an example of a combination cable and stayed truss, an obsolete engineering design. Unprocessed Field note m... More
North Halsted Street Canal Bridge, Spanning North Branch Canal at Nort...
Significance: Spanning the North Branch Canal at North Halsted Street in Chicago, the North Halsted Street Bridge is a double-leaf, fixed-trunnion bascule with a rigidly attached, below-deck counterweight. Com... More
Red River Iron Works, KY 975, Fitchburg, Estill County, KY
Unprocessed Field note material exists for this structure: N1356 Survey number: HAER KY-45 Building/structure dates: 1868 Initial Construction National Register of Historic Places NRIS Number: 74000860
Red River Iron Works, KY 975, Fitchburg, Estill County, KY
Unprocessed Field note material exists for this structure: N1356 Survey number: HAER KY-45 Building/structure dates: 1868 Initial Construction National Register of Historic Places NRIS Number: 74000860
Pennsylvania Railway Ore Dock, Machine Shop, Lake Erie at Whiskey Isla...
Survey number: HAER OH-18-E Building/structure dates: 1911-1912 Initial Construction
Pennsylvania Railway Ore Dock, Machine Shop, Lake Erie at Whiskey Isla...
Survey number: HAER OH-18-E Building/structure dates: 1911-1912 Initial Construction
Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Por...
Significance: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, an... More
Trinity River Bridge, Spanning Trinity River at East Belknap Street (U...
Significance: This structure, which exhibits several unique design elements, is one of only four known examples of a reinforced concrete cantilever span bridge constructed by the Texas Highway Department. Alon... More
Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...
Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More
Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...
See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More
Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...
See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More
Pennsylvania Railway Ore Dock, Storage Shed, Lake Erie at Whiskey Isla...
Survey number: HAER OH-18-F Building/structure dates: 1911-1912 Initial Construction
Burnside Bridge, Spanning Willamette River at Burnside Street, Portlan...
Significance: Burnside Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River, and one of five Portland span bridges (with Ross Island Bridge, Sellwood Bridge, Lovej... More
Chicago River Bascule Bridge, Monroe Street, Spanning South Branch of ...
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
Passerelle in Lincoln Park, Spanning North Lake Shore Drive (U.S. Rout...
Significance: This pedestrian bridge, or passerelle, is the only one spanning North Lake Shore Drive, a major commuter route through Chicago's Lincoln Park. The strikingly modern welded steel arch with concret... More
Passerelle in Lincoln Park, Spanning North Lake Shore Drive (U.S. Rout...
Significance: This pedestrian bridge, or passerelle, is the only one spanning North Lake Shore Drive, a major commuter route through Chicago's Lincoln Park. The strikingly modern welded steel arch with concret... More
Passerelle in Lincoln Park, Spanning North Lake Shore Drive (U.S. Rout...
Significance: This pedestrian bridge, or passerelle, is the only one spanning North Lake Shore Drive, a major commuter route through Chicago's Lincoln Park. The strikingly modern welded steel arch with concret... More
St. Charles Air Line Bridge, Spanning South Branch of Chicago River, n...
Significance: Like all Strauss heel-trunnion bascule bridges, the St. Charles Air Line Bridge rotates vertically, lifting to clear the river it spans. This particular bridge is unique, however, in that its des... More
Kelley Crossing Bridge, Spanning Plum Creek at County Route 186, Lockh...
Biography of William Payson is included as addendum to original documentation. Significance: The Kelley Crossing Bridge is one of two lenticular trusses that survive in Caldwell County and one of a cluster of e... More
Kelley Crossing Bridge, Spanning Plum Creek at County Route 186, Lockh...
Biography of William Payson is included as addendum to original documentation. Significance: The Kelley Crossing Bridge is one of two lenticular trusses that survive in Caldwell County and one of a cluster of e... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximat...
Significance: When built, the Pennsylvania Railway Ore Dock was the largest ore-unloading dock on the Great Lakes. The dock featured four Hulett unloaders with bucket capacities of 17 tons; a 15-ton capacity o... More
J. A. Minter & Son Plantation, 3 County Road 462, Selma, Dallas County...
Significance: With various frame outbuildings (including a seed house, a corn crib and two other storage buildings) and the plantation store extent, J.A. Minter & Son's farm is representative of the plantation ... More
J. A. Minter & Son Plantation, 3 County Road 462, Selma, Dallas County...
Significance: With various frame outbuildings (including a seed house, a corn crib and two other storage buildings) and the plantation store extent, J.A. Minter & Son's farm is representative of the plantation ... More
J. A. Minter & Son Plantation, 3 County Road 462, Selma, Dallas County...
Significance: With various frame outbuildings (including a seed house, a corn crib and two other storage buildings) and the plantation store extent, J.A. Minter & Son's farm is representative of the plantation ... More
East Division Street Bridge, Spanning North Branch Canal at West Divis...
Significance: When Chicago became a major commercial and industrial center after the Civil War, the most common American drawbridge was the swing bridge, horizontally rotating on a center pier to open two navig... More
Sellwood Bridge, Spanning Willamette River at Southeast Tacoma Street,...
Significance: The Sellwood Bridge, the busiest two-lane bridge in Oregon, is the southern-most span in an ensemble of twelve monumental highway bridges across the lower Willamette River at Portland, Oregon. Th... More
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Rouge Steel Company, 3001 Miller Road, Dearborn, Wayne County, MI
Unprocessed Field note material exists for this structure: N773 Survey number: HAER MI-325 National Register of Historic Places NRIS Number: 78001516
Peavey Globe Elevator, No. 1 House, West Gate Basin & Howard's Bay, ea...
Significance: The Peavey Globe Elevator was one of several grain elevators built in the first half of the twentieth century on the opposing Lake Superior harbors of Duluth, Minnesota, and Superior, Wisconsin. ... More
Pennsylvania Railway Ore Dock, Power House, Lake Erie at Whiskey Islan...
Survey number: HAER OH-18-B Building/structure dates: 1911-1912 Initial Construction
North Halsted Street Canal Bridge, Spanning North Branch Canal at Nort...
Significance: Spanning the North Branch Canal at North Halsted Street in Chicago, the North Halsted Street Bridge is a double-leaf, fixed-trunnion bascule with a rigidly attached, below-deck counterweight. Com... More
Red River Iron Works, KY 975, Fitchburg, Estill County, KY
Unprocessed Field note material exists for this structure: N1356 Survey number: HAER KY-45 Building/structure dates: 1868 Initial Construction National Register of Historic Places NRIS Number: 74000860
Occident Terminal Elevator & Storage Annex, South side of second slip,...
Survey number: HAER MN-96 Building/structure dates: 1923 Initial Construction Building/structure dates: 1930 Initial Construction Building/structure dates: 1980 Subsequent Work Building/structure dates: 199... More
Occident Terminal Elevator & Storage Annex, South side of second slip,...
Survey number: HAER MN-96 Building/structure dates: 1923 Initial Construction Building/structure dates: 1930 Initial Construction Building/structure dates: 1980 Subsequent Work Building/structure dates: 199... More
Pennsylvania Railway Ore Dock, Machine Shop, Lake Erie at Whiskey Isla...
Survey number: HAER OH-18-E Building/structure dates: 1911-1912 Initial Construction
Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Por...
Significance: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, an... More
Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Por...
Significance: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, an... More
Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Por...
Significance: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, an... More
Trinity River Bridge, Spanning Trinity River at East Belknap Street (U...
Significance: This structure, which exhibits several unique design elements, is one of only four known examples of a reinforced concrete cantilever span bridge constructed by the Texas Highway Department. Alon... More
Trinity River Bridge, Spanning Trinity River at East Belknap Street (U...
Significance: This structure, which exhibits several unique design elements, is one of only four known examples of a reinforced concrete cantilever span bridge constructed by the Texas Highway Department. Alon... More
Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...
Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More
Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...
See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More
Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...
See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More
Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...
See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More
Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...
See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More
North Avenue Bridge, Spanning North Branch of Chicago River at West No...
Significance: When Chicago became a major commercial and industrial center after the Civil War, the most common American drawbridge was the swing bridge, horizontally rotating on a center pier to open two navig... More
Chicago, Milwaukee & St. Paul Railway, Bridge No. Z-6, Spanning North ...
Significance: The Milwaukee Road's Bridge No. Z-6 may be the only one of its kind ever built, defying the conventional categories of center-bearing and rim-bearing swing bridges. This ingenious design answers ... More
Peavey Globe Elevator, West Gate Basin & Howard's Bay, east side of sl...
Significance: The Peavey Globe Elevator was one of several grain elevators built in the first half of the twentieth century on the opposing Lake Superior harbors of Duluth, Minnesota, and Superior, Wisconsin. ... More