15, also known as the Tecumseh Railroad Bridge due to its close proximity to the city of Tecumseh, is a historic railway deck truss bridge that spans the River Raisin in rural Raisin Charter Township in Lenawee County, Michigan.

The bridge was added to the National Register of Historic Places on December 4, 2001.

[3] The Lake Shore and Michigan Southern Railway was later absorbed into other railroads, and in 1982 Conrail abandoned the branch on which this bridge sits.

[4] The 254-foot-10½-inch-long (77.7 m) four-span bridge carries a single track over the River Raisin.

The area is heavily wooded, and the bridge cannot be seen from the roadway during the summer months.