MARLBORO, MASS. (WHDH) - A water main break prompted the closure of a stretch of a busy road in Marlborough on Thursday.

Route 20 at Hosmer Street is closed as the Department of Public Works and Eversource work to fix the break that happened around 3:30 a.m.

“It was definitely tough and we do have detail officers in place to direct traffic but with schools in the area and businesses, it was definitely difficult to get the traffic through,” Marlborough Police Sgt. Zachary Attaway said.

Crews worked to deice the roadway after the low temperatures caused the surface to become slick.

“I do know that the weather’s not helping as far as them being able to do their jobs effectively,” Attaway continued.

All traffic is being detoured around the area.

Drivers are told to expect delays and are encouraged to seek alternate routes.

This is a developing story; stay with 7NEWS on-air and online for the latest updates.

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