Mountainside New Jersey Traffic 2024-09-21 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Mountainside New Jersey Dulles, VA 0.00 mi Ashburn, VA 0.00 mi Leesburg, VA 3.50 miInterstate highway exits close to Mountainside New Jersey Exit 31, i66 29.00 mi Exit 40, i66 29.76 mi Exit 28, i66 30.57 miInterstate highways close to Mountainside New Jersey i66 map 29.00 mi i270md map 35.00 mi i70 map 39.18 miState roads close to Mountainside New Jersey US 15 VA map 3.48 mi VA 7 BUSINESS map 5.49 mi VA 7 map 6.10 mi