The southbound I-25 off-ramp to Arapahoe Road will close from 10 p.m., Thursday, April 6, to 5:30 a.m., Friday, April 7. Click here for detour route. Also, a full weekend closure of the eastbound Arapahoe Road on-ramp to northbound I-25 will be required the weekend of April 7 for ramp reconstruction work. This closure will be in effect from 8 p.m., Friday, April 7, to 5:30 a.m., Monday, April 10. Click here for detour route.