HOUSTON -- An overturned big rig shut down all inbound lanes of the Southwest Freeway at the 610 West Loop on Saturday.

As of 6:39 p.m., Houston Transtar confirms the accident has been cleared and all lanes are back open.

The 2-vehicle crash happened before 11 a.m.

As of 12:45 p.m. crews were still working to upright the truck and clear the scene. The exit from Southwest Freeway southbound to the 610 West Loop was also blocked

Traffic on the West Loop in both directions was slow in the area, too.

Drivers were advised to take Westpark Drive as an alternate route, although major delays are expected as the cleanup continues.

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