| PA Route 108 | ||||
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| Route information | ||||
| Maintained by PennDOT | ||||
| Length: | 31.6 mi (50.9 km) | |||
| Major junctions | ||||
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| East end: |
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| Location | ||||
| Counties: | Butler, Lawrence | |||
| Highway system | ||||
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I-376 near Mahoningtown
PA 18 in Lawrence Junction
PA 168 in New Castle
PA 65 in New Castle
US 19 near Harlansburg
I-79 near Slippery Rock