The Rennic Road Bridge is a single-span Warren truss bridge in Washington County, Arkansas. It historically carried Rennic Road (County Road 6) across an unnamed creek in a rural part of the county about northeast of the hamlet of Cincinnati, Arkansas, but has recently been bypassed, and stands next to the modern bridge. The bridge has a span of and a total length of . It was built c. 1915, probably replacing a bridge built around the time the road was laid out c. 1880. The steel for the trusses came from the Cambria Steel Company of Johnstown, Pennsylvania; the builder is not known.
The bridge was listed on the National Register of Historic Places in 2004 as the County Road 6 Bridge.