Retaining Wall and Sound Wall Repairs on Serpentine Drive and Interstate 25

February 15, 2019 - Southeastern Colorado

EL PASO COUNTY - On February 20, the Colorado Department of Transportation and Structures, Inc. will close Serpentine Drive (south of US Highway 24 from Mile Post (MP) 32 to MP 33) to begin repairs to the location’s historic retaining wall. Repairs are expected to take place until May 31, 2019. During this time, traffic will be redirected to the east Manitou Avenue exit and the west Manitou Avenue (US 24 Business) exit. No traffic delays are expected.

Repairs to the sound wall on southbound Interstate 25 from MP 144 to MP 142 (between Bijou Street and Fillmore Street) are expected to begin in March. These repairs are expected to conclude late August 2019. During this time, I-25 will remain open, but minor traffic delays may occur on southbound I-25, as a shoulder closure, along with reduced speed limits, may be necessary to provide a safe work zone.

At each location, the wall repairs will include:

  • The Serpentine Drive retaining wall repair consists of reinforcing the structural integrity of the 160-foot-long historic stone wall built in 1935. Work will also include adding drainage and resetting the wall’s façade to match the original stonework.

  • The I-25 sound wall repair consists of repairing the wall’s concrete surfaces. The wall will be cleaned and a concrete sealer will be applied to protect the surface. The improvements will extend the life of the wall and its aesthetic value.


For additional information about this project, call the project information line at 719.593.9239. Information about weekly lane closures will be available at For information on travel conditions visit, sign up for GovDelivery, or call 511. Updates are also available via Twitter @coloradodot and CDOT’s Facebook page at


CDOT has approximately 3,000 employees located at its Denver headquarters and in regional offices throughout Colorado, and manages more than 23,000 lane miles of highway and 3,429 bridges. CDOT also manages grant partnerships with a range of other agencies, including metropolitan planning organizations, local governments and airports. It also administers Bustang, the state-owned and operated interregional express service. Governor Polis has charged CDOT to further build on the state’s intermodal mobility options.