The Porter County Coroner identified the victim as 38-year-old Ryan Greer of Knox, Indiana.
The crash occurred at about 2 a.m. in the eastbound lanes near U.S.20 in the Burns Harbor area.
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Indiana State Police Sgt. Glen Fifield said the construction worker had pulled over onto the right shoulder to take down signage when a semi that had left the roadway struck the vehicle. The construction worker had just gotten out of his vehicle when Fifield said it was hit by the semi truck.
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The worker was then hit by his own vehicle and killed. The victim has been identified to the Porter County Coroner's Office as Ryan Greer of Knox, Indiana.
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After hitting the construction worker's vehicle, the semi truck hit a wall and caught fire. No other injuries have been reported.
For several hours, all eastbound lanes of I-94 were closed as police investigate. As of 9:15 a.m. , the two left lanes are blocked.