Interstate 180 (Pennsylvania)

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Interstate 180 marker

Interstate 180
Route information
Auxiliary route of I-80
Maintained by PennDOT
Length: 28.85 mi[1] (46.43 km)
Existed: 1984 – present
Major junctions
West end: Future I‑99 / US 15 / US 220 in Williamsport, PA

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
Counties: Lycoming, Northumberland
Highway system
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[edit]

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[edit]

This exit list is presented in a west-to-east order as the route is signed, despite exit numbering going east-to-west.[citation needed]

County Location mi km Exit Destinations Notes
Lycoming Williamsport Future I‑99 south / US 220 south to I-80 – Lock Haven Continuation beyond western terminus
29 Future I‑99 north / US 15 north – Mansfield
28 Maynard Street Serves Pennsylvania College of Technology
27B Via Bella, Hepburn Street Eastbound exit and westbound entrance
27A US 15 south (Market Street) – Lewisburg Single-point urban interchange
26 Via Bella, Basin Street Westbound exit and eastbound entrance
Loyalsock 25 Commerce Park, Faxon
23B Warrensville, Montoursville Eastbound exit
23A East Third Street Eastbound exit and entrance; Serves Williamsport Regional Airport
23 East Third Street, Warrensville Westbound exit; Supplemental westbound entrance from Broad Street
Montoursville 21 PA 87 north (Loyalsock Avenue) PA 87 begins north, Loyalsock Avenue south
20 Fairfield Road
Muncy Township 17 Lycoming Mall Road
15 US 220 north – Halls, Pennsdale East end of US 220 overlap
Muncy Creek Township 13 PA 405 – Muncy, Hughesville
10 South Main Street Westbound exit and eastbound entrance
Northumberland Delaware Township 5 PA 54 – Turbotville
1 McEwensville, Watsontown
Turbot Township I-80 – Bellefonte, Bloomsburg I-80 exit 212.
PA 147 south – Milton Continuation beyond eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]


Route map: Bing / Google

KML is from Wikidata