Impaired driver involved in 4-vehicle crash in I-94 construction zone near Michigan City, IN: police

MICHIGAN CITY, Ind. (WLS) -- A serious crash impacted traffic in northwest Indiana on Saturday morning.

Just after 6:30 a.m., Indiana State Police said eastbound Interstate 94 was shut down about 1 mile west of U.S. 421. That's near Michigan City.

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According to ISP, the crash happened in a construction zone and involved four vehicles, including one operated by an impaired driver.

A crash reconstruction team was on the scene.

ISP initially said closures would be lengthy, but later announced that all lanes had reopened just after 7:40 a.m.

Authorities did not immediately provide information on injuries.

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This is a developing story. Check back with ABC7 for updates.