Pennsylvania Route 173
| Route information | ||||
|---|---|---|---|---|
| Maintained by PennDOT | ||||
| Length | 45.7 mi (73.5 km) | |||
| Major junctions | ||||
| South end | PA 8 near Slippery Rock | |||
| I-80 near Grove City | ||||
| North end | PA 27 near Cochranton | |||
| Location | ||||
| Country | United States | |||
| State | Pennsylvania | |||
| Counties | Butler, Mercer, Crawford | |||
| Highway system | ||||
| ||||
Pennsylvania Route 173 (PA 173) is a 45.7-mile-long (73.5 km) state highway located in western Pennsylvania, running from PA Route 8 south of Slippery Rock in Butler County, to PA Route 27 north of Cochranton in Crawford County.