Live Chat I-78 Community Nearby Traffic I 78 exit 40 2024-04-27 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to I-78 Exit 40 Plainfield, NJ 2.84 Berkeley Heights, NJ 3.85 Warren, NJ 4.90 Interstate highway exits close to I-78 Exit 40 Exit 40, i78 1.50 Exit 41, i78 4.73 Exit 44, i78 6.03 Interstate highways close to I-78 Exit 40 i78 map 1.50 i287nj map 9.43 i95 map 15.47 State roads close to I-78 Exit 40 NJ CR 527 map 0.26 NJ CR 531 map 0.64 NJ SOMERSET 653 map 0.92