U.S. Federal Route 206 runs north-south in Mercer County. This is a main highway across the Trenton area. U.S. Rt. 206 passes through the following towns in Mercer County. Trenton Lawrenceville Lawrence Coxs Corner Princeton U.S. Rt. 206 is multi-plexed in Mercer County. BUSN U.S. Rt. 1. , at Trenton.
A BGS on WB I-195. A BGS on SB I-295. A junction marker on SB BUSN U.S. Rt. 1. A guide marker on SB BUSN U.S. Rt. 1. SB U.S. Rt. 206 south of I-295. A BGS on SB I-95 (now NB I-295). A BGS on SB I-95 (now NB I-295). A BGS on NB I-295. A BGS on NB I-295. A guide sign on WB Franklin Corner Road.