Interstate 180 (Pennsylvania)

For the former I-180, see Interstate 176.

Interstate 180
Route information
Maintained by PennDOT
Length	28.85 mi (46.43 km)
Existed	1984–present
NHS	Entire route
Major junctions
West end	US 15/US 220 in Williamsport, PA
Major intersections	US 15 in Williamsport PA 87 in Montoursville US 220 near Pennsdale PA 405 near Muncy
East end	I-80 / PA 147 near Milton, PA
Location
Country	United States
State	Pennsylvania
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Pennsylvania State Route System Interstate US State Scenic Legislative
← PA 179 → PA 180

Interstate 180 (abbreviated I-180) is a spur highway that connects Williamsport, Pennsylvania to Interstate 80 near Milton, Pennsylvania. The length of the highway is 28.85 miles (46.43 km). It was also the designation of present-day Interstate 176 between Morgantown, Pennsylvania and Reading, when the Pennsylvania Turnpike carried the "I-80S" designation in the 1960s. It is signed as an east–west route for its entire length, even though half of the route runs north–south.

Route description

Looking west from the Carl E. Stotz Memorial Little League Bridge in Williamsport

I-180 begins along the banks of the West Branch Susquehanna River in Williamsport, at an interchange with U.S. Route 15 and U.S. Route 220. The highway begins its signage, concurrent along these routes.

At exit 27A, US 15 leaves the overlap running south across the Carl E. Stotz Memorial Little League Bridge and I-180 continues eastward, still concurrent with US 220 northbound. From there, I-180 runs along the West Branch Susquehanna River until the highway reaches the eastern suburbs of Williamsport, where US 220 leaves the Interstate via exit 15.

From US 220 to the eastern terminus, I-180 is aligned north–south, though the highway is signed east–west. I-180 terminates interchanging Interstate 80 and the freeway continues as Pennsylvania Route 147.

Exit list

County	Location	Mile	Exit	Destinations	Notes
Lycoming	Williamsport		29	US 15 N — Mansfield	Freeway continues as US 220 south for 5 miles (8.0 km) west
			28	Maynard Street	Pennsylvania College of Technology
			27B	Via Bella, Hepburn Street	Exit eastbound only, entrance westbound only
			27A	US 15 S — Lewisburg · Market Street	Single-point urban interchange
			26	Via Bella, Basin Street	Exit westbound only, entrance eastbound only
	Loyalsock		25	Commerce Park, Faxon
			23A	Warrensville, Montoursville	Eastbound only
			23B	East Third Street	Eastbound, Williamsport Regional Airport
			23	East Third Street, Warrensville	Westbound only, supplementary west-on from Broad Street
	Montoursville		21	PA 87	PA 87 begins north, Loyalsock Avenue south
			20	Fairfield Road
	Muncy Township		17	Lycoming Mall Road
			15	US 220 n – Halls, Pennsdale
	Muncy Creek Township		13	PA 405 – Muncy, Hughesville
			10	South Main Street	Exit westbound only, entrance eastbound only
Northumberland	Delaware Township		5	PA 54 – Turbotville
			1	McEwensville, Watsontown
	Turbot Township			I-80 – Bellefonte, Bloomsburg	Freeway continues as PA 147 south for 7 miles (11 km)