On Monday, May 16 and Tuesday, May 17, Interstate 70 traffic will shift to the north side of the interstate (into the westbound lanes), so construction can begin on the underpass bridge along eastbound I-70. This shift also signifies the completion of the westbound underpass bridge. Construction of this bridge began April 4 as part of the Colorado Department of Transportation (CDOT) and Town of Vail’s I-70 Vail Underpass project.