N.C. Department of Transportation officials say they will extend closure of the 11500 block of Bringle Ferry Road so contractors can do environmental cleanup following an April 2 wreck that killed a Mooresville truck driver and spilled ethanol.

The initial closure was expected to last until Friday, but weather has created delays for work crews, who now say they expect the closure to last through Friday, May 8, at 5 p.m. Motorists are to use Panther Creek, Ribelin, Stokes Ferry, Wyatt Grove Church and Surratt roads as the detour route.

Officials ask that motorists not travel beyond the detour and closure signs set up at the intersections for the safety of the workers at the site, unless the person is a resident or property owner who lives within the closure zone.

“In no case are unauthorized vehicles allowed to travel through the closed work zone area,” Emergency Services Chief Frank Thomason said in a statement.

A private company, Hepaco, has been working to clean up the site following the wreck, in which thousands of gallons of the chemical spilled onto the road and contaminated dirt in the area.

Officials have said well water can’t be tested until dirt is removed.