The St. Mary's Covered Bridge, also known as Shade Gap Covered Bridge and Huntingdon County Bridge No. 8, is a historic wooden covered bridge located at Cromwell Township in Huntingdon County, Pennsylvania, USA. It is a 65.25-foot-long (19.89 m) 16.5-foot-wide (5.0 m), Howe truss bridge with cut stone abutments, constructed in 1889. It crosses the Shade Creek and is the only remaining covered bridge in Huntingdon County.