Pennsylvania State Route 45 is an east-west highway across Central Union County. It runs from the Union/Centre County Line, near Woodward, to the Union/Northumberland County Line, near Lewisburg. PA St Rt 45 passes through the following towns in Union County. Hartleton Mifflinburg Linntown Lewisburg PA St Rt 45 is multi-plexed in Union County. TRUCK Pennsylvania State Route 304, at Mifflinburg. PA St Rt 45 intersects the following highways in Union County. Pennsylvania State Route 235, near Laurelton. Pennsylvania State Route 104, at Mifflinburg. TRUCK Pennsylvania State Route 304, at Mifflinburg. Pennsylvania State Route 304, at Mifflinburg. TRUCK Pennsylvania State Route 304, at Mifflinburg. U.S. Rt. 15, at Lewisburg.
A junction marker on NB U.S. Rt. 15. A guide marker on NB U.S. Rt. 15. EB PA St Rt 45 east of U.S. Rt. 15. EB PA St Rt 45 west of 5th Street. EB PA St Rt 45 at 4th Street. EB PA St Rt 45 at Front Street. EB PA St Rt 45 at the Susquahanna River.
