Trunk Line Bridge No. 237

Trunk Line Bridge No. 237 is a concrete arch bridge in Ransom Township, Michigan, that carries Burt Road over Silver Creek. Built in 1918, it is listed on the National Register of Historic Places.

History
A thoroughfare existed along the current route of Burt Road as early as 1894. By the time of the bridge's construction, this route formed part of the east-west State Highway No. 308. The bridge was built in 1918 by the Michigan State Highway Department according to a standard plan. The Pioneer, Ohio-based company Beighton and Spaulding served as contractor.

The bridge was listed on the National Register of Historic Places on January 14, 2000.

Design and location
The bridge is a concrete, barrel vaulted deck arch bridge. Its single arch spans 31 ft across Silver Creek. The bridge carries the unpaved Burt Road in a rural, wooded area of Ransom Township in Hillsdale County. The parapet railings are constructed of solid concrete and have five rectangular recesses on the inside and outside faces. At the southwest corner is affixed a bridge plate on the inside of the railing.