Fort Carson, CO - Gate Hours, Map and Status The Main Gate 1, Commercial Gate 3, Gate 4, and Gate 20 are all open 24 hours. Both Gate 1 and Gate 3 are Visitor Control Center (VCC) locations; only the latter handles contractors and vendors. Gate 5 is open 0500-2100, 7 days a week. Gate 19 hours are 0500-1800, M-F.