This article is about the current Pennsylvania Route 378. For the former route, see Pennsylvania Route 478.
Pennsylvania Route 378
Route information
Maintained by PennDOT
Length
9.555 mi[1] (15.377 km)
Existed
1971–present
Major junctions
South end
PA 309 in Center Valley
Major intersections
PA 412 in Bethlehem
North end
US 22 in Bethlehem
Location
Country
United States
State
Pennsylvania
Counties
Lehigh, Northampton
Highway system
Pennsylvania State Route System
Interstate
US
State
Scenic
Legislative
← PA 377
→ I-380
Pennsylvania Route 378 (PA 378) is a north-to-south road in Lehigh and Northampton counties in the Lehigh Valley region of the U.S. state of Pennsylvania. The southern terminus is at PA 309 in Center Valley. Its northern terminus is at U.S. Route 22 (US 22) in Bethlehem. The route heads north from PA 309 as a two-lane undivided road through Upper Saucon Township and Lower Saucon Township before crossing South Mountain into Bethlehem. Here, PA 378 follows city streets through Bethlehem's South Side, intersecting the northern terminus of PA 412. The route becomes a four-lane freeway and crosses the Lehigh River before continuing north to US 22. PA 378 is the only highway from US 22 to Center City Bethlehem, and a quick route for visitors traveling to the Wind Creek Bethlehem casino resort on the city's South Side.
The portion of PA 378 south of Bethlehem was originally numbered as PA 12 in 1928 and renumbered to PA 191 in 1961. Construction on the freeway from West Broad Street to US 22 began in 1966 and finished two years later. This freeway was numbered Interstate 378 (I-378) and served as a spur of I-78, which formerly ran along the US 22 freeway.
When I-78 was rerouted from US 22 to south of Bethlehem, the spur became disjointed from its parent. I-378 was downgraded to state route status in 1971. Three years later, the PA 378 designation replaced PA 191 from Center Valley to Third Street in Bethlehem. The state did not remove the exit tabs for the freeway section, making PA 378 one of only a few state freeways with exit numbers; another such freeway is PA 309 in Wilkes-Barre. The exit numbers also go in the wrong direction: Exit 3 is south of Exit 1, most likely due to the freeway being built when Pennsylvania still practiced sequential exit numbering. In 2009, the portion north of Lehigh River was named the Fred B. Rooney Highway after Fred B. Rooney.[2]
^Bureau of Maintenance and Operations (January 2015). Roadway Management System Straight Line Diagrams (Report) (2015 ed.). Pennsylvania Department of Transportation. Retrieved June 30, 2015.
Lehigh County (PDF)
Northampton County (PDF)
^"Bill Information, House Bill 1468". Pennsylvania General Assembly. October 9, 2009. Retrieved November 12, 2018.
and 18 Related for: Pennsylvania Route 378 information
PennsylvaniaRoute378 (PA 378) is a north-to-south road in Lehigh and Northampton counties in the Lehigh Valley region of the U.S. state of Pennsylvania...
Bethlehem respectively, but I-178 was never built and I-378 became PennsylvaniaRoute378 (PA 378) since it no longer connected to I-78. Improvement of the highway...
list of former state routes in Pennsylvania. These roads are now either parts of other routes or no longer carry a traffic route number. This list also...
Highways, and state routes. U.S. and Interstate highways are classified as state routes in Pennsylvania. The Commonwealth of Pennsylvania established the...
PennsylvaniaRoute 191 (PA 191) is a 111.54 mi (179.51 km)-long state highway in the U.S. state of Pennsylvania. The route, a major non-freeway corridor...
PennsylvaniaRoute 478 (PA 478) is a 2.20-mile-long (3.54 km) state highway located in Clarion and Venango counties. The highway begins at an intersection...
southeastern Pennsylvania. Its southern terminus is at PA 611 in the Nockamixon Township community of Harrow. Its northern terminus is at PA 378 in Bethlehem...
Bethlehem, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. Completed in 1924, Hill to Hill Bridge carries PennsylvaniaRoute378 from Wyandotte...
PennsylvaniaRoute 309 (PA 309) is a state highway that runs for 134 miles (216 km) through eastern Pennsylvania. The route runs from an interchange between...
Valley region of eastern Pennsylvania, PA 378, which exits in downtown Bethlehem was once I-378 but was predesignated as a state route after I-78 was rerouted...
a historic iron furnace located in Licking Township, Clarion County, Pennsylvania. It was built in 1844, and is a cold blast charcoal furnace measuring...
PennsylvaniaRoute 26 (PA 26) is a 125.5-mile (202.0 km) highway in the south-central area of Pennsylvania. Its northern terminus is at PA 150 northwest...
PennsylvaniaRoute 120 (PA 120) is a state highway in the Commonwealth of Pennsylvania in the United States. It stretches from U.S. Route 219 (US 219)...
PennsylvaniaRoute 940 (PA 940) is a 43.2-mile-long (69.5 km) Pennsylvania highway located in the Pocono Mountains. It runs from PA 309 in Hazleton east...
in 1976, Interstate 378 was deleted and PA 191 was truncated, and their former alignments were designated as PennsylvaniaRoute378. In the 21st century...
PennsylvaniaRoute 50 (PA 50) is a 32.7-mile-long (52.6 km) state highway located in western Pennsylvania. The western terminus of the route is at PA 844...
transparencies) Bethlehem colonial historical area and right-of-way of PennsylvaniaRoute378 Spur Route (42 transparencies) "Tamar E. Bair". Morning Call. Morning...
Global Information
PA 309 in Center Valley
PA 412 in Bethlehem
US 22 in Bethlehem
