The southbound lanes of the Sam Rayburn Tollway are closed on Wednesday afternoon while rescuers work to remove a crashed wrecker dangling off an overpass.

Texas Sky Ranger flew to the crash scene at Texas 121 and Hardin Boulevard/Chelsea Road, where the flatbed could be seen rolled onto its side in the southbound lanes. The wrecker’s cab had plowed through the bridge’s concrete wall and was dangling off the overpass.

Two other cars rolled onto their sides and appear to have been involved in the crash. One of them looks like it was attached to the wrecker, but that has not been confirmed.

The southbound lanes of the SRT are closed while the crash is cleared, and three lanes are blocked on the northbound side.

The crash is about a mile west of Central Expressway. The backup on northboun

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