Pennsylvania State Route 100 is a north-south highway in Western Lehigh County. It runs from Pennsylvania State Route 309, near Pleasant Corners, to the Lehigh/Berks County Line, near Hereford. PA St Rt 100 passes through the following towns in Lehigh County. Fogelsville Trexlertown Macungie Shimerville Old Zionville PA St Rt 100 is multi-plexed in Lehigh County. U.S. Rt. 222, at Trexlertown. PA St Rt 100 intersects the following highways in Lehigh County. Pennsylvania State Route 309, near Pleasant Corners. Interstate 78, at Fogelsville. U.S. Rt. 22, at Fogelsville. U.S. Rt. 222, at Trexlertown. U.S. Rt. 222, at Trexlertown. TRUCK Pennsylvania State Route 100, at Macungie. Pennsylvania State Route 29, at Shimerville. TRUCK Pennsylvania State Route 100, at Shimerville.
Branches of PA St Rt 100 in Lehigh County. A junction marker in Fogelsville. A guide marker in Fogelsville. SB PA St Rt 100 near I-78/U.S. Rt. 22. A BGS on SB PA St Rt 100.
