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The Pennsylvania State Route Numbering System
Random Numbers Assigned to Pennsylvania State Routes

Route numbers that do not fit into any apparent numbering scheme are listed below. In many cases, a randomly assigned number was assigned in a nonrandom manner to another route in the past. Most randomly assigned numbers remain today. Most of the randomly assigned routes designated before the Interstate highway system was created run east-west if the number is odd and north-south if even (like the original 1928 system), whereas later routes have the directions reversed (like the Interstate system).

Click on the route numbers below for a brief description of the route.

Current routes
Decommissioned routes

 

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