Millmont Red Bridge is a historic wooden covered bridge in Hartley Township, Union County, Pennsylvania. It is a , Burr Truss bridge, constructed in 1855. It crosses the Penns Creek. The bridge is no longer open to motor vehicles but foot traffic is permitted. It was listed on the National Register of Historic Places in 1980. References Covered bridges on the National Register of Historic Places in Pennsylvania Covered bridges in Union County, Pennsylvania Bridges completed in 1855 Wooden bridges in Pennsylvania Bridges in Union County, Pennsylvania National Register of Historic Places in Union County, Pennsylvania Road bridges on the National Register of Historic Places in Pennsylvania Burr Truss bridges in the United States 1855 establishments in Pennsylvania