Top Guard Truncated Domes for FDOT T5579 in Apopka (Orange County) August 28, 2017 Posted by on August 28, 2017January 26, 2018 Top Guard red truncated domes installed +/-300 sq.ft. at the US441/US429 Connection in Apopka (Orange County). FDOT contract T5579. We worked for Florida Safety Contractors was sub for Gosalia Concrete.