Crews will begin a five-month project to repave and do other work along Interstate 25 through Denver on Sunday, leading to nightly lane closures and other delays. The $22 million project will stretch from Alameda Avenue to 44th Avenue just south of the interchange with I-70 and include building high er walls, repairing expansion joints between the highway and bridges and installing new signs. Most of the repaving will be done at night between mid-May and the end of October, officials said. Construction crews will replace 2,700 feet of concrete walls along I-25 adjacent to the South Platte River — work scheduled through January 2026. Here’s what I-25 drivers will face: U.S. 6 and Alameda ramp closures Shortly after sundown Sunday, CDOT crews will start replacing walls along southbound I-25 between the U.S. 6 ramp and Alameda. They’ll work Sundays through Thursdays between 9 p.m. and 6 a.m., requiring overnight closures of the east and westbound U.S. 6 on-ramps to southbound I-25 and the southbound I-25 off-ramp to Alameda Avenue. Drivers will also face single-lane and highway-shoulder closures on southbound I-25. Detours CDOT crews are setting up detours. Drivers headed east or west on U.S. 6 will be routed onto southbound Kalamath Street to the Santa Fe/Kalamath on-ramp to southbound I-25. Drivers headed south on I-25 to Alameda will be routed onto the Santa Fe Drive exit and then across Mississippi Avenue and over the South Platte River onto North Santa Fe Drive and then Alameda. Related Articles Fatal Pueblo train derailment likely caused by faulty welding, feds say Lakewood man hospitalized, suspected of shooting at Aurora officers during police chase How to regain RTD riders? Transit advocates push $4.2 billion plan to run buses every 15 minutes Council members want to know how much new women’s soccer stadium will cost Denver Left turns get special treatment on Santa Fe Drive in Douglas County as traffic engineers aim to reduce congestion I-25 lane closures Once nighttime temperatures consistently exceed 44 degrees in mid-May — a threshold for laying asphalt — workers will begin resurfacing the highway. As many as three lanes in each direction will be closed at night, Sundays through Thursdays, until late October. Drivers also may face delays and lane closures during the day and on weekends, depending on project needs, with closures timed to accommodate other events in the area. CDOT supervisors said they’ll set up traffic cones and signs, including overhead electronic signs, to guide drivers.   ...read more read less