Pennsylvania Route 378

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PA Route 378

Length:

10 mi^[1] (16 km)

Formed:

1971

South end:

PA 309 in Upper Saucon Twp.

North end:

US 22 in Bethlehem

Counties:

Lehigh, Northampton

Pennsylvania State Routes
< I-376		I-380 >
Legislative

Pennsylvania Route 378 is a north-to-south road in Lehigh and Northampton Counties. Its northern terminus is at U.S. Route 22 in Bethlehem and the portion north of the Lehigh River is an expressway.

1 Route description
2 Communities along the route
3 Major intersections
- 3.1 Junction List
- 3.2 Exit list
4 History
5 References

[edit] Route description

The highway was once Interstate 378 but when Interstate 78 was rerouted from U.S. Route 22 to south of the city, the spur became disjointed from its parent. The freeway was decommissioned and downgraded to state route status. Surprisingly, the state didn't remove the exit tabs for the freeway, making PA Route 378 one of the only state freeways with exit numbers. 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.

It narrows to a city street on Bethlehem's South Side, crosses South Mountain to Lower Saucon Township, then proceeds to its southern terminus at Pennsylvania Route 309 in Center Valley. PA 378 was originally known as Pennsylvania Route 191 south of the river.

[edit] Communities along the route

[edit] Cities

Bethlehem

[edit] Townships

[edit] Towns

Center Valley

[edit] Major intersections

[edit] Junction List

County	Location	Mile	Road(s)	Notes
Lehigh	Upper Saucon Township	0.0	PA 309
Northampton	Lower Saucon Township	3.3	I-78	PA 378 passes under I-78.
	Bethlehem	5.7	PA 412	Northern terminus of PA 412.
	Bethlehem	6.0		Begin Expressway

Legend
Crossing, no access	Concurrency termini	Decommissioned	Unconstructed	Closed

[edit] Exit list

County	Location	Mile	#	Destinations	Notes
Lehigh	Bethlehem	PA 378 continues south at-grade.
		6.1	4	Main Street via Bridge Street	Northbound exit only.
		6.5	3	Third Avenue	Southbound only.
		6.6	3	West Union Boulevard	Northbound entrance only.
		7.4	2	Eighth Avenue
		9.0	1	Catasauqua Road	Southbound only.
		9.4	1	US 22/Schoenersville Road	Access to Schoenersville Road via C/D road of US 22 east.

[edit] History

Shield for the former Interstate 378

Construction from West Broad Street to U.S Route 22 (Lehigh Valley Thruway) began in 1966 and finished in 1968. At that time, the segment received the Interstate 378 designation. Signed in 1971 after I-378 was decommissioned. In 1974, the designation replaced Pennsylvania Route 191 from Center Valley to Third Street in Bethlehem.

[edit] References

^ Pennsylvania Highways - Pennsylvania Route 378

edit Transportation Infrastructure of the Lehigh Valley
East-West thru-highways	I-78 \| US 22 \| PA 248
South-North thru-highways	Northeast Extension of the Pennsylvania Turnpike \| PA 33 \| PA 309 \| PA 611
Allentown Roads	PA 145 \| PA 222 \| PA 987 \| Cedar Crest Boulevard \| Lehigh Street \| Tilghman Street
Bethlehem Roads	PA 378 \| PA 412 \| PA 512 \| Bethlehem Pike
Other roads	US 222 \| PA 29 \| PA 100 \| PA 143 \| PA 191 \| PA 329 \| PA 873 \| PA 946
Public transportation	Lehigh and Northampton Transportation Authority
Airports	Lehigh Valley International Airport
Waterways & Rail	Lehigh Canal \| Delaware Division of the Pennsylvania Canal \| Norfolk Southern Railway

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Categories: Pennsylvania state highways | Lehigh Valley | Interstate 78 | Limited access Pennsylvania state routes