Crews to Close Southbound I-25 Right Lane Between Northgate & Interquest Overnight Sept. 26-27

Sept. 25, 2018 -

COLORADO SPRINGS—From 9 p.m. to 5 a.m. Wednesday, Sept. 26 and Thursday, Sept. 27, travelers can expect a single-right-lane closure on southbound I-25 between the Northgate and Interquest Parkway interchanges (from mile points 154 to 156) as crews remove barrier. Speeds will be reduced to 60 mph in the project area.

Construction schedules are subject to change based on weather/unforeseen circumstances.

Project Info

Crews on this project are repairing box culverts at the Monument Creek Branch under both directions of I-25, between the Northgate and Interquest Parkway interchanges. The soil throughout this area is highly susceptible to erosion.

Storm flooding in 2013 and 2015 overwhelmed existing riprap in the channel and created several new channels. The channel in the 350-foot-wide median between the structures was significantly degraded, and the box culverts were significantly scoured. The runoff collected within the roadway sag of the I-25 southbound lanes overtopped the asphalt curb and eroded a large area of the west side roadway embankment of I-25. The guardrail was also undermined by the erosion.

Project work includes:

  • repairing concrete box culverts and wingwalls;
  • constructing concrete drop structures to prevent future failures;
  • armoring channels with boulders, riprap and grouted riprap;
  • placing embankment material to restore the Monument Creek Branch channel and surrounding areas;
  • seeding disturbed areas; and
  • making allowances for the Prebbles Meadow Jumping Mouse habitate