HOUSTON (KIAH) — The lanes of the Southwest Freeway reopened at 1:30 p.m., over eight hours after an 18-wheeler crashed on the freeway on Thursday morning that led to all outbound lanes to be closed, Houston police said.

The accident happened just before 5 a.m. near Bissonnet Street and the Sam Houston Tollway. The truck hit a traffic sign that has toppled down onto the ground. Hazmat crews are also on the scene.

Traffic has been backed up all the way to Bellaire Boulevard as of 6:45 a.m.

The Texas Department of Transportation said that work to repair the sign could take several hours, way into the afternoon.

Finally, at 1:30 p.m., TxDoT announced that the lanes to the freeway have been reopened to traffic.

Use our CW39 traffic map to help navigate your trip.