Live Chat I-8 Community Nearby Traffic CA CR 21 2024-04-27 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to CA CR 21 Coronado, CA 4.25 National City, CA 8.49 Lemon Grove, CA 12.15 Interstate highway exits close to CA CR 21 Exit 16b, i5 0.49 Exit 16a, i5 0.81 Exit 17a, i5 0.94 Interstate highways close to CA CR 21 i5 map 0.49 i15 map 4.17 i8 map 4.77 State roads close to CA CR 21 163 SOUTHBOUND map 0.64 163 NORTHBOUND map 0.72 94 WESTBOUND map 1.46