State highway in Pennsylvania, US
Pennsylvania Route 663 (PA 663) is a 22.13-mile-long (35.61 km) state highway in Montgomery and Bucks counties in southeast Pennsylvania. Its southern terminus is at PA 100 in the borough of Pottstown and its northern terminus is at PA 309 and PA 313 in the borough of Quakertown, where the road continues eastward as PA 313. Along the way, PA 663 also passes through the borough of Pennsburg. It is called John Fries Highway between Pennsburg and Quakertown. It has an interchange with Interstate 476 (I-476, Pennsylvania Turnpike Northeast Extension) at exit 44 west of Quakertown. The route was assigned in 1930, and it has had several realignments since its commissioning, including two major ones.