Top Guard Truncated Domes for FDOT T7377 in Largo (Pinellas County) April 24, 2017 Posted by on April 24, 2017February 26, 2018 Top Guard yellow truncated domes installed +/-450 sq.ft. at Adrian Ave & Gladys St in Largo (Pinellas County). FDOT contract T7377. MTM Contractors was prime.