KANSAS CITY, Mo. - A structural engineer failed to show a connection between his interests and an additional insured's claims against an insurer regarding damage sustained during the installation of backfill, a Missouri federal judge ruled Feb. 7, declining to allow the engineer to intervene (Performing Arts Community Improvement District v. Ace American Insurance Co., No. 13-0945, W.D. Mo.; 2014 U.S. Dist. LEXIS 15302).