CINCINNATI — A collapsed overpass covered southbound lanes of Interstate 75 with hundreds of tons of concrete and steel Tuesday, following a construction accident that killed a worker and injured a truck driver.

The Ohio Department of Transportation said the busy artery through downtown Cincinnati will be closed at least two to three days.

“The debris needs to be removed and we have to determine if there is damage to the pavement,” spokeswoman Sharon Smigielski said. “The cause is still under investigation.”