Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Old US-131 Bridge, Spanning Big Cedar River, Mecosta, Mecosta County, ...
Significance: The bridge was constructed using standardized bridge plans developed by the Michigan State Highway Department. The bridge's 4 spans make it one of the longest surviving steel multi-girder bridges... More
Raritan Arsenal, Steam Cleaning Shop S-3-B, 2890 Woodbridge Avenue, Bo...
Significance: Steam Cleaning Shop S-3-B is significant as a support structure in the machine shops complex, which formed the industrial core of the arsenal. Survey number: HABS NJ-1061-F Building/structure da... 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
Raritan Arsenal, Machine Shop S-3, 2890 Woodbridge Avenue, Bonhamtown,...
Significance: Machine Shop S-3 is significant as a contributing structure in the World War II expansion of the shops complex. This expansion arose due to increased wartime production of artillery and motorized ... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... 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
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
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... 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
Raritan Arsenal, Machine Shop S-3, 2890 Woodbridge Avenue, Bonhamtown,...
Significance: Machine Shop S-3 is significant as a contributing structure in the World War II expansion of the shops complex. This expansion arose due to increased wartime production of artillery and motorized ... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Bayou Teche at Charenton Bridge, Carries Louisiana Highway 324 (LA 324...
Significance: This Warren pony truss swing bridge has significance as an example of a movable swing bridge. Its significance is demonstrated by the presence of distinctive engineering and design features of a p... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... 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
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Bayou Teche at Charenton Bridge, Carries Louisiana Highway 324 (LA 324...
Significance: This Warren pony truss swing bridge has significance as an example of a movable swing bridge. Its significance is demonstrated by the presence of distinctive engineering and design features of a p... More
Raritan Arsenal, Steam Cleaning Shop S-3-B, 2890 Woodbridge Avenue, Bo...
Significance: Steam Cleaning Shop S-3-B is significant as a support structure in the machine shops complex, which formed the industrial core of the arsenal. Survey number: HABS NJ-1061-F Building/structure da... More
Raritan Arsenal, Artillery Shop S-3-A, 2890 Woodbridge Avenue, Bonhamt...
Significance: Artillery Shop S-3-A is significant for its contribution to World War II tank and artillery production. The poured concrete structure is an unusual construction type amid the brick and frame struc... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Raritan Arsenal, Steam Cleaning Shop S-3-B, 2890 Woodbridge Avenue, Bo...
Significance: Steam Cleaning Shop S-3-B is significant as a support structure in the machine shops complex, which formed the industrial core of the arsenal. Survey number: HABS NJ-1061-F Building/structure da... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... 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
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Old US-131 Bridge, Spanning Big Cedar River, Mecosta, Mecosta County, ...
Significance: The bridge was constructed using standardized bridge plans developed by the Michigan State Highway Department. The bridge's 4 spans make it one of the longest surviving steel multi-girder bridges... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... 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
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
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... 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
Raritan Arsenal, Machine Shop S-3, 2890 Woodbridge Avenue, Bonhamtown,...
Significance: Machine Shop S-3 is significant as a contributing structure in the World War II expansion of the shops complex. This expansion arose due to increased wartime production of artillery and motorized ... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... More
Raritan Arsenal, Steam Cleaning Shop S-3-B, 2890 Woodbridge Avenue, Bo...
Significance: Steam Cleaning Shop S-3-B is significant as a support structure in the machine shops complex, which formed the industrial core of the arsenal. Survey number: HABS NJ-1061-F Building/structure da... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... More
Gold Placers Incorporated, Coak Creek Dredge, Near Coal Creek & Yukon ...
Significance: In 1934, Charles Janin, a prominent San Francisco mining engineer, designed a 4-cubic-foot dredge for Gold Placers Incorporated, a newly formed mining company organized by General A.D. McRae of Va... More
Bayou Teche Bridge, Spanning Bayou Teche, Ruth, St. Martin Parish, LA
Significance: Bayou Teche Bridge is the oldest existing steel I-beam swing span in Louisiana. This bridge is 246 feet long and 15 feet wide. A hand-operated, equal arm swing span bridge, it was designed for a... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Bridgeport Bridge, Spanning Wisconsin River at U.S. Highway 18, Bridge...
Significance: In 1983, the Bridgeport Bridge, comprised of seven truss spans, was one of five remaining Pennsylvania trusses in the State of Wisconsin. However in the subsequent ten years, four of these uncomm... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Old US-131 Bridge, Spanning Big Cedar River, Mecosta, Mecosta County, ...
Significance: The bridge was constructed using standardized bridge plans developed by the Michigan State Highway Department. The bridge's 4 spans make it one of the longest surviving steel multi-girder bridges... More
Old US-131 Bridge, Spanning Big Cedar River, Mecosta, Mecosta County, ...
Significance: The bridge was constructed using standardized bridge plans developed by the Michigan State Highway Department. The bridge's 4 spans make it one of the longest surviving steel multi-girder bridges... More
NASA Langley Research Center, Seaplane Towing Channel, 108 Andrews Str...
Significance: This facility performed an essential function in solving design problems that are unique to seaplanes. Several major principles of seaplane hull configuration were developed at this facility. The... 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
Raritan Arsenal, Artillery Shop S-3-A, 2890 Woodbridge Avenue, Bonhamt...
Significance: Artillery Shop S-3-A is significant for its contribution to World War II tank and artillery production. The poured concrete structure is an unusual construction type amid the brick and frame struc... More