Construction zone up in order to continue rebuilding the road after the Sept. 2013 floods. Speed limit drops to 45mph, as it should because of a sharp chicane in the road, but it stays 45mph for quite a while after you clear the construction. Only apparent reason for the artificially low speed limit is to appease the half-dozen Weld County Sheriff and Colorado State Patrol cars you’ll see waiting to nail you as you accelerate back up to 65.