U.S. Route 11 in Pennsylvania

US 11 enters Pennsylvania parallel to Interstate 81 south of Greencastle in Antrim Township, Franklin County. The two routes head to the northeast, running parallel to each other as they pass through Chambersburg, where they intersect U.S. Route 30, Shippensburg, and Carlisle. Northeast of Carlisle in Middlesex Township, US 11 interchanges with the Pennsylvania Turnpike (Interstate 76), and then I-81 roughly 1 mile later. The stretch of US 11 between I-76 and I-81 is known as the "Miracle Mile" since it contains plenty of traveler services including restaurants, gas stations, lodging, truck stops, shops, etc. There is no direct interchange between the two interstates, so travelers must use this stretch, or travel through downtown Carlisle, to get from one interstate to the other.

US 11, now to the south of I-81, continues eastward into the western suburbs of Harrisburg as the Carlisle Pike. This road serves a major arterial route in eastern Cumberland County, Pennsylvania. Rumored to have originally been a Native American trail, it is now a significant center of urban sprawl serving much of Harrisburg's western suburbs. The road passes through Middlesex Township, the small unincorporated village of New Kingstown, Silver Spring and Hampden Township. Upon reaching Pennsylvania Route 581, US 11 splits from Carlisle Pike and runs concurrent with PA 581.

US 11 north of Bloomsburg

In Camp Hill, a close suburb of Harrisburg, US 11 stops paralleling I-81 and joins U.S. Route 15 northward through the western suburbs of Harrisburg, crossing I-81 in this area. As the road exits the Harrisburg area, US 11 and US 15 begin to parallel the Susquehanna River as both head northward. They intersect U.S. Route 22/U.S. Route 322 near Duncannon and U.S. Route 522 in Selinsgrove. The two routes remain overlapped to an intersection in Shamokin Dam, where US 15 branches off to the northwest, following the path of the Susquehanna's West Branch northward. US 11, in contrast, continues to parallel the main Susquehanna River, passing through municipalities such as Danville, Bloomsburg, and Berwick (where it crosses Interstate 80) prior to reaching Wilkes-Barre.

US 11 north of Shickshinny

North of Wilkes-Barre in Pittston, US 11 breaks from the Susquehanna and begins to run parallel to I-81 once more. From Wilkes-Barre, the highway goes through nearby Scranton, becoming the North Scranton Expressway north of downtown. The North Scranton Expressway (officially the Congressman Joseph M. McDade Expressway) is a freeway north of downtown Scranton, Pennsylvania, United States, carries U.S. Route 11 and Pennsylvania Route 307 north from the Mulberry Street Bridge over the Lackawanna River near downtown north to Interstate 81, U.S. Route 6 and U.S. Route 6 Business. It carried unsigned State Route 3027 until State Routes 0011 and 0307 were moved off their former routes to match the signed US 11 and PA 307 alignments (forming State Route 6011 and State Route 6307). SR 3027 still runs along Mulberry Street from Jefferson Avenue, where US 11 and PA 307 turn southwest, southeast to Harrison Avenue (SR 6011).

Eastbound US 6/southbound US 11 approaching the interchange with I-81 and the northern terminus of I-476 in Clarks Summit

In the northwest corner of Scranton (referred to as the Notch), US 11 intersects U.S. Route 6. US 6 joins US 11 westward to Factoryville, where US 11 separates from US 6 and resumes its northerly trek through Susquehanna County to the New York-Pennsylvania border in Great Bend Township. This stretch was originally built from 1918-1922 on the old route of the Delaware, Lackawanna and Western Railroad, and is called the "Lackawanna Trail".[1]

The Harrison Avenue Bridge, part of old US 11

Prior to 1941, US 11 followed Walnut Bottom Road between Shippensburg and Carlisle while PA 33 ran along the Governor Rittner Highway.[2] In 1941, US 11 and PA 33 swapped alignments, with US 11 moving to Governor Rittner Highway and PA 33 moving to Walnut Bottom Road.[3][4]

Prior to 1989, US 11 followed an older alignment bypassing Downtown Scranton. From Pittston Avenue, US 11 turned right onto Moosic Street and climbed the hill. At Crown Avenue, it turned left, joining PA 307 which was coming from the opposite direction on Moosic Street. Together they crossed the Harrison Avenue bridge and continued about a mile to Myrtle Street. PA 307 and US 11 turned right on Myrtle for one block then left on Wheeler Avenue. After entering the Borough of Dunmore and crossing the old Erie Railroad tracks, the pair turned left on Cherry Street then bore right onto South Blakely Street, entering Downtown Dunmore. They turned left onto Green Ridge Street, re-entering Scranton in the Green Ridge section of the city. At the end of Green Ridge Street at North Scranton Junior High School, they turned right onto Main Avenue entering the Providence section of the city. After a half mile, they turned left onto West Market Street. PA 307 left US 11 by turning left onto Keyser Avenue. US 11 continued on West Market Street to Saltry Place, where it turned left for one block then right onto the North Scranton Expressway. From it, it joined its current alignment heading towards Clarks Summit. At one time, this final intersection with the expressway was a 4-way traffic circle servicing Oak Street, Market Street, the Scranton Carbondale Highway (US 6), and Northern Boulevard (today's US 11).

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U.S. Route 11
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