Top Guard Truncated Domes for FDOT E1K75 SR559 in Auburndale (Polk County) January 3, 2017 Posted by on January 3, 2017March 15, 2018 Top Guard yellow Truncated Domes installed +/-360 sq.ft. along SR 559, at I-4 interchange in Auburndale (Polk County). For FDOT contract E1K75. Cone&Graham is prime. Roadway Concepts is sub.