I-25 & Alameda Bridge Replacement

Work this Week
January 16 - 20, 2023
  • Crews have begun to widen South Lipan Street, north of West Alameda Avenue. A full closure of Lipan Street will be in place starting Tuesday, January 17.

About the Project:

Project improvements include:

  • Replacement of the Alameda over South Platte River Bridge, improving flood capacities
  • Modifications to Alameda intersections to improve access and build a multi-modal corridor: reconfiguration of the I-25 South Santa Fe Drive interchange, elimination of South Platte River Drive from Alameda to Cedar; traffic will be diverted to the widened South Lipan Street north of West Alameda Avenue
  • Reconstruction of the South Platte River Trail: improvements in sight distance, increased 12-foot concrete trail, a 4-foot finely crushed stone trail, and 3-foot vegetated shoulders for an overall trail width of 22 feet
  • Construction of an on-street two-way cycle track on the north side of Alameda between South Lipan Street and South Kalamath Street with a connection to the South Platte River Trail
  • Installation of a water quality pond and associated South Platte River outfall
  • Improvements to sidewalks on both sides of Alameda


Work Schedule:

  • Typical working hours will be from 7 a.m. to 7 p.m., Monday through Friday. 

Traffic Impacts:

  • Bridge reconstruction will be phased with Alameda remaining open except for an occasional nighttime or weekend closure for bridge removal.
  • Motorists can also expect one-lane and turn-lane closures in the construction zone.
  • During the initial phase of construction, Lipan Street will be built out in preparation for removing South Platte River Drive. Closures of Lipan Street can be expected.
  • The South Platte River Trail will be detoured around the construction zone where it crosses under Alameda, but will remain open.

Project Facts

  • Cost: $22,317,300
  • Contractor: Ames Construction
  • Timeline: January 2023 - December 2024
  • Location: I-25 & Alameda Avenue over South Platte River Bridge (C0 26)