Metropolitan Water Board, Chestnut Hill Low Service Pump Station, Beac...
Significance: Encouraged by the good results being obtained by the Metropolitan Sewerage System, the Massachusetts legislature of 1893 authorized the State Board of Health to make investigations for a metropoli... More
Green Butte Copper Company, Bathhouse, McCarthy Creek 12 miles Northea...
Significance: This structure is part of the Green Butte Copper Company mining district. Constructed of wood, this wood frame structure is located ten feet north of the bunkhouse in the lower camp. Survey numb... More
Sunrise Mine, Hall, Granite County, MT
Significance: The property was one of the more successful and longest operating of the dozen or so gold mills established in Granite County. It made significant contribution to the economic and social developme... More
Mullan Road Segment, Saint Regis, Mineral County, MT
Significance: Although the military road never functioned as such, it did become a popular thoroughfare for emigrants and fortune seekers during the gold rushes in the 1860s and for a few years thereafter. Pred... More
Traveler's Rest-Lolo Trail, Lolo, Missoula County, MT
Also Nez Perce (Nee Mee Poo) National Historic Trail Significance: The Lewis and Clark Expedition camped at Traveler's Rest while enroute to the Pacific Ocean on September 9-11, 1805, and again during the retur... More
Green Butte Copper Company, Tram Terminous, McCarthy Creek 12 miles No...
Significance: Part of the Green Butte Copper Company mining operation. This wood frame structure has a platform roof with cable tram bull wheel. Survey number: HAER AK-9-F Building/structure dates: 1924 Init... More
Emmetsburg Cemetery Monument, Hall, Granite County, MT
Significance: Founded in 1865-66, Emmetsburg was one of Montana's earliest mining camps. The townsite has been entirely destroyed by dredging, and the cemetery is the only remaining vestige. It is one of the ol... More
Pineau Placer Mining Camp, Goldcreek, Powell County, MT
Significance: The camp was constructed at an early date (1890s or shortly thereafter), and for three decades was associated with Gus Pineau, a well-known miner in the area. Up until the 1940s, the Pineau operat... More
Green Butte Copper Company, Tin Shed, McCarthy Creek 12 miles Northeas...
Significance: Part of the Green Butte Copper Company mining operation. This rectangular, 10' x 14' structure is made of corrugated metal and has 'Seattle Hardware Co., Green Butte Mining' stenciled on its wall... More
Alberton Pictograph, Alberton, Mineral County, MT
Significance: The site appears to be related to pictograph representations in the Columbia Plateau. Although Flathead, Pend d'Orielle, Kootenai, and Nez Perce Indians, which inhabited western Montana, are consi... More
U.S. Steel Corporation, Clairton Works, 22-Inch Mill Engine, 400 State...
Significance: Drives 21-inch Single train cross-country structural mill. Survey number: HAER PA-49-C Building/structure dates: 1910 Initial Construction
Moonlight Mining Camp, Maxville, Granite County, MT
Significance: Few mining camps in Montana are as complex, intact, and unaltered as the camp. It is an excellent example of the distinctive characteristics of the type, period, and method of construction inheren... More
Royal Basin Mine & Mill Site, Maxville, Granite County, MT
Significance: It was one of the larger outfits in a region noted for numerous and varied mining operations. The intensive development and large-scale investment in the mine made an important contribution to the... More
Truckee-Carson Irrigation District Facility Yard, Saw Shed, Sixth & Ta...
Significance: The saw shed is one of the original buildings in the Newlands Project Facility Yard. It was built to house the power saw in the lumber yard. Survey number: HAER NV-6-J Building/structure dates:... More
Copper State Mine, Maxville, Granite County, MT
Significance: This historic mine reveals much about the technology and engineering techniques utilized in a medium-sized copper mine of the early 20th century. Remains of the mine are more extensive and better ... More
Green Butte Copper Company, Covered Stairway, McCarthy Creek 12 miles ...
Significance: The 12' x 12', wood frame stairway is attached to the bunkhouse that was used by miners employed at the Green Butte Copper Company. Survey number: HAER AK-9-I Building/structure dates: 1925 Init... More
Shooters Island, Ships Graveyard, Vessel No. 54, Newark Bay, Staten Is...
Significance: The remains of this vessel is probably the last in existence of this type of vessel. Survey number: HAER NY-162-C Building/structure dates: ca. 1890 Initial Construction
Shooters Island, Ships Graveyard, Vessel No. 54, Newark Bay, Staten Is...
Significance: The remains of this vessel is probably the last in existence of this type of vessel. Survey number: HAER NY-162-C Building/structure dates: ca. 1890 Initial Construction
Green Butte Copper Company, Covered Stairway, McCarthy Creek 12 miles ...
Significance: The 12' x 12', wood frame stairway is attached to the bunkhouse that was used by miners employed at the Green Butte Copper Company. Survey number: HAER AK-9-I Building/structure dates: 1925 Init... More
Shooters Island, Ships Graveyard, Vessel No. 54, Newark Bay, Staten Is...
Significance: The remains of this vessel is probably the last in existence of this type of vessel. Survey number: HAER NY-162-C Building/structure dates: ca. 1890 Initial Construction
Green Butte Copper Company, Covered Stairway, McCarthy Creek 12 miles ...
Significance: The 12' x 12', wood frame stairway is attached to the bunkhouse that was used by miners employed at the Green Butte Copper Company. Survey number: HAER AK-9-I Building/structure dates: 1925 Init... More
Shooters Island, Ships Graveyard, Vessel No. 54, Newark Bay, Staten Is...
Significance: The remains of this vessel is probably the last in existence of this type of vessel. Survey number: HAER NY-162-C Building/structure dates: ca. 1890 Initial Construction
Shooters Island, Ships Graveyard, Vessel No. 54, Newark Bay, Staten Is...
Significance: The remains of this vessel is probably the last in existence of this type of vessel. Survey number: HAER NY-162-C Building/structure dates: ca. 1890 Initial Construction
Shooters Island, Ships Graveyard, Vessel No. 54, Newark Bay, Staten Is...
Significance: The remains of this vessel is probably the last in existence of this type of vessel. Survey number: HAER NY-162-C Building/structure dates: ca. 1890 Initial Construction
County Road 130 Bridge, Spanning Gulf Creek, Rising Fawn, Dade County,...
Significance: County Road 130 Bridge is representative of the rivet-connected Warren pony truss with verticals and is the only such bridge recorded in Dade County. Based on the context of the Georgia Historic ... More
County Road 130 Bridge, Spanning Gulf Creek, Rising Fawn, Dade County,...
Significance: County Road 130 Bridge is representative of the rivet-connected Warren pony truss with verticals and is the only such bridge recorded in Dade County. Based on the context of the Georgia Historic ... More
County Road 130 Bridge, Spanning Gulf Creek, Rising Fawn, Dade County,...
Significance: County Road 130 Bridge is representative of the rivet-connected Warren pony truss with verticals and is the only such bridge recorded in Dade County. Based on the context of the Georgia Historic ... More
County Road 130 Bridge, Spanning Gulf Creek, Rising Fawn, Dade County,...
Significance: County Road 130 Bridge is representative of the rivet-connected Warren pony truss with verticals and is the only such bridge recorded in Dade County. Based on the context of the Georgia Historic ... More
County Road 130 Bridge, Spanning Gulf Creek, Rising Fawn, Dade County,...
Significance: County Road 130 Bridge is representative of the rivet-connected Warren pony truss with verticals and is the only such bridge recorded in Dade County. Based on the context of the Georgia Historic ... More
Boston & Providence Railroad, Canton Viaduct, Neponset Street at East ...
Significance: The Canton Viaduct is a granite structure 615 feet in length, 22 feet in width, and 70 feet above the surface of the Neponset River's East Branch. The viaduct was the principal structure on the B... More
Boston & Providence Railroad, Canton Viaduct, Neponset Street at East ...
Significance: The Canton Viaduct is a granite structure 615 feet in length, 22 feet in width, and 70 feet above the surface of the Neponset River's East Branch. The viaduct was the principal structure on the B... More
Boston & Providence Railroad, Canton Viaduct, Neponset Street at East ...
Significance: The Canton Viaduct is a granite structure 615 feet in length, 22 feet in width, and 70 feet above the surface of the Neponset River's East Branch. The viaduct was the principal structure on the B... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
Bidwell Bar Suspension Bridge & Stone Toll House, Near Lake Oroville (...
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t... More
General Dynamics Corporation Shipyard, 97 East Howard Street, Quincy, ...
Significance: Throughout its more than eighty year history, the General Dynamics Corporation/Quincy-Fore River Shipyard was one of the leading private shipyards in the United States. Producing both military an... More
General Dynamics Corporation Shipyard, 97 East Howard Street, Quincy, ...
Significance: Throughout its more than eighty year history, the General Dynamics Corporation/Quincy-Fore River Shipyard was one of the leading private shipyards in the United States. Producing both military an... More
General Dynamics Corporation Shipyard, 97 East Howard Street, Quincy, ...
Significance: Throughout its more than eighty year history, the General Dynamics Corporation/Quincy-Fore River Shipyard was one of the leading private shipyards in the United States. Producing both military an... More
General Dynamics Corporation Shipyard, 97 East Howard Street, Quincy, ...
Significance: Throughout its more than eighty year history, the General Dynamics Corporation/Quincy-Fore River Shipyard was one of the leading private shipyards in the United States. Producing both military an... More
General Dynamics Corporation Shipyard, 97 East Howard Street, Quincy, ...
Significance: Throughout its more than eighty year history, the General Dynamics Corporation/Quincy-Fore River Shipyard was one of the leading private shipyards in the United States. Producing both military an... More
General Dynamics Corporation Shipyard, 97 East Howard Street, Quincy, ...
Significance: Throughout its more than eighty year history, the General Dynamics Corporation/Quincy-Fore River Shipyard was one of the leading private shipyards in the United States. Producing both military an... More
U.S. Steel Corporation, Clairton Works, Blast Furnace Blowing Engine B...
Significance: This building houses seven vertical cross-compound condensing steam engines. These blowing engines originally produced wind for the Clairton Works blast furnaces. In ca. 1961, two furnaces (#6 a... More
U.S. Steel Corporation, Clairton Works, Blast Furnace Blowing Engine B...
Significance: This building houses seven vertical cross-compound condensing steam engines. These blowing engines originally produced wind for the Clairton Works blast furnaces. In ca. 1961, two furnaces (#6 a... More
U.S. Steel Corporation, Clairton Works, Blast Furnace Blowing Engine B...
Significance: This building houses seven vertical cross-compound condensing steam engines. These blowing engines originally produced wind for the Clairton Works blast furnaces. In ca. 1961, two furnaces (#6 a... More
U.S. Steel Corporation, Clairton Works, Blast Furnace Blowing Engine B...
Significance: This building houses seven vertical cross-compound condensing steam engines. These blowing engines originally produced wind for the Clairton Works blast furnaces. In ca. 1961, two furnaces (#6 a... More
U.S. Steel Corporation, Clairton Works, Blast Furnace Blowing Engine B...
Significance: This building houses seven vertical cross-compound condensing steam engines. These blowing engines originally produced wind for the Clairton Works blast furnaces. In ca. 1961, two furnaces (#6 a... More
U.S. Steel Corporation, Clairton Works, Blast Furnace Blowing Engine B...
Significance: This building houses seven vertical cross-compound condensing steam engines. These blowing engines originally produced wind for the Clairton Works blast furnaces. In ca. 1961, two furnaces (#6 a... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More
Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff...
Significance: The Smith Avenue High Bridge, a nineteenth century wrought iron Warren deck truss, is the longest and highest roadway truss bridge in Minnesota. It was designed by Keystone Bridge Co. of Pittsbur... More