Top Guard Truncated Domes for FDOT T3531 SR 20 in Tallahassee (Leon County) February 27, 2017 Posted by on February 27, 2017March 6, 2018 Top Guard yellow Truncated Domes installed +/-800 sq.ft. along Apalachee Pkwy from Franklin Blvd ramp to Vogue Dr. in Tallahassee (Leon County). FDOT contract T3531. CW Roberts was prime.