U.S. Route 22 (Pennsylvania)
Generated by GPT-5-miniExpansion Funnel Raw 95 → Dedup 0 → NER 0 → Enqueued 0
| U.S. Route 22 (Pennsylvania) | |
|---|---|
| State | PA |
| Type | US |
| Route | 22 |
| Length mi | 338.20 |
| Established | 1926 |
| Direction a | West |
| Terminus a | Pittsburgh |
| Direction b | East |
| Terminus b | New Jersey state line |
| Counties | Allegheny, Westmoreland, Indiana, Cambria, Blair, Huntingdon, Mifflin, Juniata, Perry, Dauphin, Lancaster, Berks, Lehigh, Northampton, Monroe. |
U.S. Route 22 (Pennsylvania) is a major east–west United States Numbered Highway traversing central and eastern Pennsylvania, linking the Pittsburgh region with the Lehigh Valley, Reading, and the New Jersey border. The corridor passes through a mix of urban centers, industrial suburbs, Appalachian gaps, and river valleys, serving as a principal arterial alongside interstates such as Interstate 376, Interstate 78, and Interstate 80. The route interfaces with historic transportation corridors including the Allegheny Portage Railroad, the Pennsylvania Canal, and former alignments like Lincoln Highway.
Route description
US 22 enters Pennsylvania from Ohio near the outskirts of the Pittsburgh and immediately connects to regional routes such as U.S. Route 30 and U.S. Route 19. In Allegheny County the route skirts suburbs like Monroeville and intersects major arteries like Interstate 376 near Pittsburgh International Airport access. Proceeding east into Westmoreland County, US 22 forms freeway segments around cities including Greensburg and meets U.S. Route 119 and Pennsylvania Route 66. In Indiana County the highway passes near Indiana and connections to Pennsylvania Route 286.
Across the Allegheny Mountains in Cambria County and Blair County, US 22 negotiates gaps and parallels rail corridors used historically by Pennsylvania Railroad and modern freight operators such as Norfolk Southern. Near Altoona the route links to Interstate 99 and U.S. Route 220. Continuing east, US 22 follows river valleys including the Susquehanna River tributaries through Juniata and Mifflin counties, providing access to towns such as Lewistown.
In Dauphin County the corridor approaches the Harrisburg region, intersecting Interstate 81 and crossing the Susquehanna River via nearby crossings served by state and federal highways. Farther east in Lancaster County and Berks County the highway serves Manheim, Reading, and links with U.S. Route 222 and U.S. Route 322. In the Lehigh Valley the route becomes a major urban freeway through Allentown and Bethlehem, intersecting Interstate 78 and connecting to regional transit hubs like Lehigh Valley International Airport. US 22 exits Pennsylvania into New Jersey near Easton and Phillipsburg.
History
Established in 1926 as part of the original United States Numbered Highway System, the route evolved from earlier turnpikes and alignments tied to corridors such as the Lincoln Highway and branches of the National Road. During the early 20th century US 22 absorbed sections of numbered state routes including predecessors in Pennsylvania Department of Highways plans. Mid-century upgrades created freeway segments in response to traffic growth from industrial centers like Pittsburgh, Allentown, and Reading, and linked to interstate projects including Interstate 78 and Interstate 80.
Significant construction phases included bypasses of downtown Greensburg, the creation of the Lehigh Valley Thruway through Lehigh County, and realignments around Altoona and Harrisburg. The route has been influenced by federal funding programs such as the Federal-Aid Highway Act of 1956 and local initiatives from agencies like the Pennsylvania Turnpike Commission and PennDOT. Historic events along the corridor include flood responses to events impacting the Susquehanna River basin and transportation planning associated with regional economic shifts like the decline of heavy industry and the rise of logistics centers near Interstate 78.
Major intersections
Key interchanges include connections with Interstate 376 near Pittsburgh, U.S. Route 119 in Greensburg, Interstate 99 and U.S. Route 220 near Altoona, Interstate 81 near Harrisburg, U.S. Route 322 near Ephrata, U.S. Route 222 and U.S. Route 422 near Reading, and Interstate 78 and Interstate 476 in the Lehigh Valley. The eastern terminus links to Interstate 78 and state routes providing crossings to New Jersey at the Delaware River crossings near Easton and Phillipsburg.
Special routes
Several special alignments and auxiliary routes have been designated over time, including US 22 Business loops through Altoona, Harrisburg, Reading, and Allentown, spurs connecting to industrial districts, and temporary detours during construction projects related to PennDOT modernization. Historic alternate routes once connected to communities like Lewistown, Bellefonte, and Ephrata and were signed to direct traffic during seasonal closures or major events involving corridors such as Pennsylvania Route 611.
Future and planned projects
Planned improvements target interchange reconstructions, capacity upgrades, and safety enhancements coordinated by PennDOT and metropolitan planning organizations including the Lehigh Valley Planning Commission and the Borough of Easton stakeholders. Projects under study involve ramp realignments near Interstate 78, bridge replacements over tributaries to the Susquehanna River, and corridor-level multimodal planning integrating with Amtrak services at regional stations like Allentown Station (proposed). Funding sources include federal programs tied to transportation reauthorization acts and state capital budgets managed in partnership with counties such as Lehigh County and Berks County.
Additional features and points of interest
US 22 provides access to cultural, historical, and recreational sites such as the Flight 93 National Memorial (via nearby connecting routes), the Johnstown Flood National Memorial vicinity, and heritage corridors connected to the Allegheny Portage Railroad National Historic Site. The corridor serves academic institutions including Indiana University of Pennsylvania, Penn State Altoona, Lebanon Valley College, and Lehigh University, and connects to medical centers like Lehigh Valley Hospital and Penn State Health Milton S. Hershey Medical Center via arterial links. Recreational destinations accessible from US 22 include state parks such as Ricketts Glen State Park (via connecting highways), ski resorts in the Pocono region like Blue Mountain Ski Area, and retail and logistics hubs that support distribution chains tied to Port of Philadelphia and rail freight by CSX Transportation and Norfolk Southern.