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Revision as of 21:04, 21 October 2007 by NE2 (talk | contribs) ("Decommission", in the sense of highways, is a neologism.)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Pennsylvania Route 378 | ||||
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| Route information | ||||
| Maintained by PennDOT | ||||
| Length | 10 mi (16 km) | |||
| Existed | 1971–present | |||
| Location | ||||
| Country | United States | |||
| State | Pennsylvania | |||
| Counties | Lehigh, Northampton | |||
| Highway system | ||||
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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.
Route description
| Communities |
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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. I-378 was 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.
Major intersections
Junction List
| County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|
| Lehigh | Upper Saucon Township | 0.0 | 0.0 |  PA 309 | |
| Northampton | Lower Saucon Township | 3.3 | 5.3 |  I-78 | PA 378 passes under I-78. |
| Bethlehem | 5.7 | 9.2 |  PA 412 | Northern terminus of PA 412. | |
| 6.0 | 9.7 | Begin Expressway | |||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
Exit list
| County | Location | Mile | # | Destinations | Notes |
|---|---|---|---|---|---|
| Lehigh | Bethlehem | PA 378 continues south at-grade.
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| 6.1 | 4 | Main Street via Bridge Street | Northbound exit only. | ||
| 6.5 | 3 | Third Avenue | Southbound only. | ||
| 6.6 | West Union Boulevard | Northbound entrance only. | |||
| 7.4 | 2 | Eighth Avenue | |||
| 9.0 | 1 | Catasauqua Road | Southbound only. | ||
| 9.4 |  US 22/Schoenersville Road
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Access to Schoenersville Road via C/D road of US 22 east. | |||
History
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 deleted. In 1974, the designation replaced Pennsylvania Route 191 from Center Valley to Third Street in Bethlehem.
References
- Pennsylvania Highways - Pennsylvania Route 378
- Rand McNally Motor Carriers Road Atlas 2007