South Dakota Department of Transportation Bridge No. 63-052-030 facts for kids
Quick facts for kids |
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South Dakota Department of Transportation Bridge No. 63-052-030
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 Location in South Dakota
Location in the United States
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| Nearest city | Marion, South Dakota |
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| Area | less than one acre |
| Built | 1913 |
| Built by | Federal Bridge Co. |
| Architectural style | Warren pony truss |
| MPS | Historic Bridges in South Dakota MPS |
| NRHP reference No. | 99001217 |
| Added to NRHP | September 29, 1999 |
The South Dakota Department of Transportation Bridge No. 63-052-030 is a special old bridge in Turner County, South Dakota. It helps 271st Street cross the West Fork Vermillion River. This bridge is located northwest of Marion.
It was built in 1913 by a company called Federal Bridge Company of Iowa. This bridge is important because it's the longest bridge still standing that this company built for the county. In 1999, it was added to the National Register of Historic Places. This means it's recognized as a significant historical site in the United States.
Contents
What Makes This Bridge Special?
The South Dakota Department of Transportation Bridge No. 63-052-030 is in the northwest part of Turner County. You can find it about 2 miles (3.2 km) north and 1.8 miles (2.9 km) west of Marion.
How the Bridge Was Built
This bridge is a "single-span Warren pony truss" type. A truss bridge uses a strong framework of triangles to support the weight. A pony truss means the top of the truss frame is not connected across the roadway. This allows traffic to pass through the truss.
The bridge rests on strong stone supports called abutments. These supports are made of rough stones. The bridge's frame is held together with rivets and bolts, which are like very strong fasteners.
Materials Used in Construction
Underneath the wooden road, there are steel I-beams. These are strong metal beams shaped like the letter "I". They are bolted to the truss frame using special metal plates called gusset plates.
On top of these I-beams are heavy wooden beams called stringers. The wooden road deck, where cars drive, is laid over these stringers.
Its History and Builder
The Federal Bridge Company of Des Moines, Iowa built this bridge in 1913. This company had a contract with Turner County to build steel truss bridges between 1912 and 1925.
This bridge is quite unique. When experts looked at the bridges built by the Federal Bridge Company in the late 1990s, this one was the longest still standing in the county. It's a great example of early 20th-century bridge building.
