WILMINGTON, Del. — Two of four Delaware companies have filed a motion to dismiss claims against them in an $89 million lawsuit over their alleged role in damaging an Interstate-495 bridge.

The News Journal reports (http://delonline.us/2xqBTD6 ) that Port Contractors Inc. and Alma Properties, LLC argue in court documents that they had nothing to do with placing a 55,000-ton mound of dirt next to the highway bridge.

Officials at the Delaware transportation department say the dirt caused the concrete support columns to lean and rotate. That sparked an emergency bridge repair project that closed the interstate near Wilmington for months.

The dirt sat on land owned by DuPont and Alma. Keogh Contracting Company and Port Contractors Inc. leased the property. Neither DuPont nor Keogh has filed a response to the transportation department’s lawsuit.