A truck crash dislodged a chunk of a 15-foot, 7-inch highway bridge shortly after sunset Sunday, forcing a closure of eastbound Interstate 70 lanes leading into Denver.

The problem, Colorado Department of Transportation officials said Sunday night, is that the truck hauling a track hoe, resembling a crane, was taller than 15 feet, 7 inches.

The truck was moving west on Sixth Avenue where the road carries traffic under I-70. The impact knocked out a chunk of concrete from the bridge. The concrete crashed onto Sixth Avenue, CDOT spokeswoman Emily Wilfong said.

“Nobody was hurt. We got lucky,” Wilfong said.

CDOT officials late Sunday closed eastbound I-70 at the intersection with Sixth Avenue — essential roadways at the western edge of metro Denver — rerouting traffic. They also closed westbound lanes of Sixth Avenue at I-70 as CDOT engineers assessed damage.

“We’re hoping to have at least one lane of eastbound I-70 or two open by Monday morning,” Wilfong said.

“It is certainly significant damage. This will affect morning commutes. We are doing a bridge inspection.”

Later Sunday night, CDOT’s team completed its initial assessment and spokeswoman Amy Ford said two lanes of eastbound I-70 would be open Monday morning. But the right lane will be closed for up to a week, Ford said.

The bridge carries I-70 traffic moving down from the mountains toward Denver. “Structurally it is sound,” she said. “There will definitely be delays.”