INTERSTATE 180 (PENNSYLVANIA)

'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. 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.

Contents

Route description

Exit list

References

Route description

Major cities 'Bolded cities' are officially-designated control cities for signs
★ 'Muncy' ★ Montoursville ★ Loyalsock ★ '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 it's signage, concurrent along these routes.
At exit 27B, US 15 leaves the overlap and I-180 continues eastward 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. The interstate terminates interchanging Interstate 80 and continues as Pennsylvania Route 147.

Exit list

County	Location	Mile	#	Destinations	Notes
Lycoming	Williamsport	Western terminus of I-180/ US 15/ US 220 concurrency
			29	US 15 north — Mansfield	Westbound only.
			28	Maynard Street	Pennsylvania College of Technology.
		Eastern terminus of I-180/ US 15/ US 220 concurrency
			27B	US 15 south — Hepburn Street, Lewisburg	Eastbound only.
			26	Basin Street — Lewisburg
	Loyalsock		25	Faxon
			23A	Warrensville Road — Montoursville	Eastbound only
			23B	Third Street	Eastbound only. Williamsport Regional Airport.
			23	Third Street, Warrensville Road	Westbound only.
	Montoursville		21	PA 87 — Montoursville
			20	Fairfield Road
	Muncy Township		17	Lycoming Mall Road	Lycoming Mall.
		Eastern terminus of I-180/ US 220 concurrency
			15	US 220 north — Halls, Pennsdale
	Muncy Creek Township		13	PA 405 — Muncy, Hughesville
			10	Main Street
Northumberland	Delaware Township		5	PA 54 — Turbotville
			1	McEwensville, Watsontown
	Turbot Township			I-80 — Bellefonte, Bloomsburg
		Continues as PA 147 into Milton

References

1. Route Log - Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 2