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Motorists will be facing a detour on 159th Street on Friday that may be repeated again Jan. 23 as construction crews for Metra shut down the main thoroughfare.

Oak Forest public works employees and police will be closing the four-lane street just west of Cicero Avenue between 7 p.m. Friday and 6 a.m. Saturday. Alternate routes will be 167th Street and 147th Street. Crews will reopen one lane of 159th Street in each direction for the remainder of the weekend.

Blinderman Construction needs to use the street for its heavy equipment as it hoists steel girders into place on a major extension of the Oak Forest Metra commuter line platform. Metra plans to create another parking lot on the south side of 159th Street.