Pennsylvania Route 403 (PA 403) is a north–south state route in Somerset, Cambria and Indiana counties of Pennsylvania. The southern terminus is at U.S. Route 30 (US 30) in the hamlet of Kantner in Quemahoning Township. The northern terminus is at US 119 near Marion Center.
Route description
Somerset County
PA 403 begins at an intersection with US 30 in Quemahoning Township, Somerset County, heading northeast on two-lane undivided Triple S Road. The road becomes Whistler Road as it passes through wooded areas with some homes and industrial establishments, crossing the Stonycreek River. The route turns east and passes through the residential community of Kantner, crossing the river again. PA 403 curves to the northeast and crosses CSX's S&C Subdivision railroad line, continuing through woodland with a few residences. The road heads into Shade Township and turns to the north, running to the east of the Stonycreek River and the railroad line. The route enters Quemahoning Township again and turns east, heading into the borough of Hooversville. Here, PA 403 becomes Barn Street and runs northeast past homes. The road curves northeast into wooded areas with some residences before turning north back into Quemahoning Township. The route becomes Whistler Road again and runs through forests with some fields and homes, turning west to cross the CSX line and the river before turning north again and passing through Blough. PA 403 crosses the Stonycreek River into Paint Township and heads across the CSX line again, passing through Landstreet and continuing through more rural areas to the northeast of the river and railroad tracks.
The road turns north into the borough of Benson and becomes Border Street, heading through more woods before entering residential areas. The route turns west and crosses the railroad tracks before turning north onto Whistler Street and crossing the Stonycreek River into Conemaugh Township. PA 403 intersects PA 601 and heads northwest past homes and some businesses on South Main Street, running through Hollsopple. The road widens into a four-lane divided highway and turns north as it comes to an interchange with the US 219 freeway. The route becomes two lanes and undivided again as it heads into the residential community of Davidsville, turning northeast onto Oak Street. PA 403 passes more homes and turns north as North Main Street before heading northeast as Tire Hill Road into farmland with some woods and homes. The road curves north into more wooded areas with some residential and commercial development, turning northwest and passing through Tire Hill.
Cambria County
PA 403 enters Upper Yoder Township in Cambria County and comes to an intersection with the northern terminus of PA 985, where it turns northeast onto Ferndale Avenue, a three-lane road with a center left-turn lane. The road heads east along the northern bank of the Stonycreek River, running through residential and commercial areas. The route turns southeast and becomes a divided highway, running through wooded areas before crossing into the borough of Ferndale. Here, PA 403 turns north and passes through residential neighborhoods as an undivided road, curving to the northwest past more homes with some businesses. The road heads north and crosses the CSX railroad line, turning northeast to cross the Stonycreek River into the city of Johnstown, where it crosses the Jim Mayer Riverswalk Trail. Here, the route becomes Bridge Street and passes through industrial areas, turning north-northeast onto Central Avenue. PA 403 runs through more industry and commercial areas, coming to an intersection with the western terminus of PA 756. The road turns north and widens to four lanes, crossing the Jim Mayer Riverswalk Trail before heading across the Stonycreek River again and passing west of Greater Johnstown High School. The route turns northwest onto two-lane Valley Pike and passes homes and businesses along the southwestern bank of the Stonycreek River before heading north on Franklin Street and running between woods to the west and the river to the east with some development. PA 403 heads northwest into residential areas on Napoleon Street, passing under the PA 56 freeway. The road heads into commercial areas and crosses PA 271 before crossing the Stonycreek River and heading along the edge of downtown Johnstown.