Route information | ||||
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Maintained by PennDOT | ||||
Length | 10.618 mi[1] (17.088 km) | |||
Existed | 1928–present | |||
Major junctions | ||||
South end | ![]() | |||
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North end | ![]() | |||
Location | ||||
Country | United States | |||
State | Pennsylvania | |||
Counties | Butler | |||
Highway system | ||||
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Pennsylvania Route 138 (PA 138) is a 10.6-mile-long (17.1 km) state highway located in Butler County, Pennsylvania. The southern terminus is at PA 8 near West Liberty. The northern terminus is at PA 38 in North Washington.