Pennsylvania Route 158 branches northeast from PA 18 in Wilmington township and northern Lawrence County to U.S. 62 (Market Street) in the borough of Mercer. The 11.9 mile long highway connects the borough of New Wilmington and Westminster College with southern Mercer County and PA 18 south to New Castle.
North
PA 158 (New Castle Street) north at Vine Street, two blocks ahead of PA 208 (Newshannock Avenue) in New Wilmington.
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PA 158 combines with PA 208 east along Neshannock Avenue for three blocks at the New Wilmington business district.
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PA 208 travels west from New Wilmington to I-376 at Pulaski and U.S. 422 at the Ohio state line. Traffic lights replaced a stop sign at PA 158/208 by 2007.
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North 
East
PA 158/208 (Neshannock Avenue) part ways at the north end of PA 956 (Market Street).
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PA 158 follows N Market Street from PA 208 en route to Mercer. PA 956 lines S Market Street to Neshannock Falls Road.
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PA 956 runs 11.0 miles southeast to U.S. 19 near Harlansburg.
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North
Steingrabe Road (SR 3028) stems 1.20 miles west from U.S. 19 (Perry Highway) in East Lackawannock township to PA 158 (Mercer Road) at Vickerman Road.
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PA 158 (Mercer Road) north of Steingrabe Road (SR 3028).
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South
Reassurance marker posted south of Steingrabe Road (SR 3028) east and Vicerkman Road west in East Lackawannock township.
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PA 158 (Mercer Road) angles southwest across Interstate 80.
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Interstate 80 west of the PA 158 (Mercer Road) overpass.
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PA 158 (Mercer Road) converges with Stonepile Road.
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Leesburg Station Road (SR 2002) heads 4.8 miles east from PA 158 to U.S. 19 at Springfield Falls, north of Leesburg.
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PA 158 (Mercer New Wilmington Road) crosses Little Neshannock Creek south of Orchard Road.
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Southbound PA 158 enters both Lawrence County and the borough of New Wilmington along N Market Street.
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Market Street south at Church Street in New Wilmington.
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PA 158 combines with PA 208 (Neshannock Avenue) west for three blocks at Downtown New Wilmington. PA 208 east leads to Volant and I-79 near London.
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Market Street south of PA 158/208 is a part of PA 956, an 11 mile route southeast to Neshannock Falls and U.S. 19 in Scott township.
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PA 158 south splits with PA 208 (Neshannock Avenue) one block west of High Street (SR 1001).
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South West
PA 208 continues west from New Wilmington to I-376 at Pulaski. PA 158 turns south onto New Castle Street toward PA 18.
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Photo Credits:
10/07/01, 06/10/10 by AARoads
Connect with:
Route 208
Route 956
Page Updated 01-27-2021.