A portion of southbound Interstate 25 near Monument Hill will be closed Monday night for construction.
The southbound lanes of the highway will be closed between Monument Hill and Highway 105 from 8 p.m. Monday to 5 a.m. Tuesday.
Traffic will funnel into one lane before the closure. It will be detoured through the weigh station about a half mile north of Highway 105.
The closure is in effect so crews can prepare for construction on the seven-mile-long southern portion of the Interstate 25 Gap project. Until now, most of the construction has been in the northernmost five miles of the project.