List of quadrant routes in Columbia County, Pennsylvania
in Pennsylvania are maintained by the Pennsylvania Department of Transportation. This article lists all the routes and their termini in Columbia County. As is the case with the other counties in the state, the route numbers start in the northeast quadrant and go clockwise from the 1000s to the 4000s. There is no numbering order scheme. Odd numbered roads travel south to north. Even numbered roads travel west to east.
The north-south quadrant divider is the North Branch Susquehanna River. The east-west quadrant dividers are PA 61 from the Schuylkill County line to Centralia, PA 42 from Centralia to Catawissa, and PA 487 from Catawissa to the Luzerne County line.1000s
2000s
3000s
4000s
