Route 895 crosses it after crossing the southern tier of Schuylkill County and ends at an interchange with Route 248 across the river in Bowmanstown.
Pennsylvania Route 248 runs directly through the gap, connecting the Lehigh Valley metro area to the smaller Carbon County boroughs of Palmerton, Bowmanstown and Lehighton.
The township's numbered roads include north-to-south Routes 145 and 873 and east-to-west Routes 248 and 946.
Its villages include Aquashicola (locally pronounced "ack-wa-SHIK-la,") Christian Corner, Hazard, and Little Gap (which hosts the Blue Mountain Ski Area.) Its highway access is via Route 248, which extends through the southern gorge of the river to connect Lehighton with the Lehigh Valley and has nearby interchanges in Palmerton and Bowmanstown.
Highway 22 crosses it east-to-west and interchanges in the township just west of Wilson with Route 248, which connects Easton and Nazareth.
Washington Township is served by PA 873, which crosses north-to-south from PA 248 in Lehigh Gap to PA 329 in Neffs and PA 309 in Schnecksville.
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