Trostletown Bridge is a historic covered bridge in Quemahoning Township, Somerset County, Pennsylvania, built in 1845 and spanning Stony Creek. One of 10 covered bridges in the county, it is 104 feet long and uses a Kingpost truss, a simple timber form linked to early American bridge building. Its half-height plank siding and gable roof reflect regional covered-bridge traditions. Because of its age, survival, and value as a preserved example of 19th-century bridge construction in southwestern Pennsylvania, it was listed on the National Register of Historic Places in 1980.