Collin's Ford Bridge, Stone arch road bridge in Shelby Township, Indiana.

Collin's Ford Bridge is a stone arch road bridge with a two-span round-arch design in Shelby Township. The limestone structure displays typical features of early engineering construction, built to cross a waterway with its solid curved supports.

Collin's Ford Bridge was built around 1907 as a two-span limestone arch bridge, 108 feet long and 17 feet wide. In 1941 the U.S. Army acquired the surrounding property, which became part of Jefferson Proving Ground and later Big Oaks National Wildlife Refuge. The bridge was listed on the National Register of Historic Places in 1996.

The bridge represents early twentieth-century engineering methods and received National Register of Historic Places designation in July 1996.

The bridge is located within Big Oaks National Wildlife Refuge, roughly a mile west of New Marion. You can reach it easily since it sits along an established road within the refuge area.

The bridge sits inside Big Oaks National Wildlife Refuge, on land the U.S. Army took over in 1941 when the Jefferson Proving Ground was established. Its alternative name, Bridge #28, comes from that era of military record-keeping rather than from local usage.