UPDATE: (02/27/15 – 1:45 p.m.) The northbound lanes of I-435 at U.S. 24 and Winner Road are now open.

A KMZU listener reported a major accident in Kansas City Friday afternoon.

According to the caller a tractor trailer had jackknifed on Highway 435 at the Highway 24/Winner Road Access lane. That crash scene is on the east side of the K.C. Metro.

Authorities have confirmed the crash. It’s in the northbound lanes of I-435. Haz-Mat crews were also called in for what appears to be diesel spilled on the highway.

MoDOT Scout traffic cameras show the overturned semi lying on its side right at the access lane from Highway 24.

MoDOT estimated lanes will remain closed for two more hours as of 12:35 p.m. Friday.