An 18-wheeler semitruck rolled on Tucson's northwest-side Friday evening, authorities said.

No one was injured in the Oct. 6 crash, said Capt. Brian Keeley, a Northwest Fire District spokesman.

The semi was transporting a large piece of construction equipment when it rolled at West River Road and North La Cholla Boulevard, said Keeley. The crash happened shortly before 6 p.m.

Motorists were asked to avoid the area.

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No further information was immediately available.

Contact reporter Carmen Duarte at or 573-4104. On Twitter: @cduartestar