EB and WB I-70 will close overnight at Colorado Blvd. from 10 p.m. to 5 a.m. on Thursday, Oct. 1, and Friday, Oct. 2. Construction crews will settle bridge beams on the new NB Colorado Blvd. bridge. In addition, the Colorado Blvd. on-ramp to WB I-70 will be closed during that time. All other ramps will be open for local access.