UPDATED 04/16/12 9 a.m.

NORTHBROOK, Ill. (CBS) — Crews Monday morning were working to repair a water main break in Northbrook.

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As CBS 2’s Mike Puccinelli reports, around 7 p.m. Sunday, a water main burst underneath Waukegan Road near Woodhill Drive, causing the road to buckle.

The asphalt was reportedly raised about 1 foot.

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The main break forced the closure of Waukegan Road between Shermer Road and Walters Avenue.

Crews had to dig a 6-foot deep hole to get to the main. After the main break was brought under control, the road remained closed as crews had to fill the hole.

As of 5 a.m., crews had filled in the hole with gravel, and inspectors from the Illinois Department of Transportation were expected to arrive and check out the hole and the street for stability.

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Waukegan Road reopened as the morning rush started around 6:30 a.m., but repairs continued.