It is one of the most significant historic structures in South Carolina.  The bridge has been granted Heritage Trust Preserve status.

From U.S. Hwy. 25 N., 2 miles northwest of S.C. Hwy. 11, turn onto Old U.S. Hwy. 25. Travel 3.2 miles and turn right onto Callahan Mountain Road. Travel 2.2 miles and bridge is on left.

The bridge is named for Joel R. Poinsett, director of the S.C. Board of Public Works during the design of the road. Poinsett gained greater fame for introducing the poinsettia to the United States. The graceful 14-foot Gothic arch stone bridge spans the Little Gap Creek.