Construction resumed Monday on the I-25 gap project.
The goal is to widen the interstate between Monument and Castle Rock.
Work was suspended during the 4th of July holiday weekend.
Drivers will see nightly single-lane closures through Thursday from 8pm to 5am.
On Wednesday, the off-ramp to Upper Lake Gulch Road will be closed, and on Thursday the on-ramp will be closed from Spruce Mountain Road.
