30-257-400 is a historic bridge in rural Hand County, South Dakota.

It is located 14 miles (23 km) south of Miller and 9.7 miles (15.6 km) east, and carries a local road over Sand Creek.

Built in 1917, it was one of the first bridges built in the county by county employees, rather than by hired bridge companies, and predates the formation of state highway department by two years.

[2] The bridge was listed on the National Register of Historic Places in 1993.

This article about a property in South Dakota on the National Register of Historic Places is a stub.