U.S. District Court Judge William Martinez issued a 22-page order saying the environmental review relied on the correct federal air-quality standards.
CDOT does not have an exact start date on the construction but estimates it could be sometime June or July. The beginning phase of the project will begin to build out the portion of the highway that will be lowered just to the north of the existing viaduct. Work will also take place at the I-270 and I-70 interchange.
A spokesperson said there would be noticeable activity for drivers in the area, but the goal is to keep lanes moving during peak travel times.