Newark International Airport (EWR) From the airport, bear left at main exit to I-78 westbound (follow signs to I-78 westbound). Exit I-78 westbound to Route 24 westbound. Exit Route 24 westbound to I-287 northbound. Exit I-287 northbound to I-80 westbound. Exit I-80 westbound at Exit 34 to Route 15 northbound (Sparta & Picatinny Arsenal). Go through traffic light, bear right to Picatinny Entrance (up small hill) before underpass. Stop at the Visitor Control Building on your left before the guard shack.