Update: Two outside lanes of southbound US 75 and all lanes of northbound US 75 are open, according to the city of Allen.

Due to major accident, all lanes on US 75 in Allen are about to be closed down to remove wreckage. Use caution in the area or alternate routes. We will keep you updated as we can. pic.twitter.com/U5LqmETsAx

— City of Allen (@CityofAllenTX) December 13, 2017