TRAFFIC ADVISORY: I-25 Lane Closures Between Northgate and Interquest Parkway Interchanges

April 23, 2018 - Southeastern Colorado/CDOT Region 2

Colorado Springs – This week there will be lane restrictions on Interstate-25 (I-25) between Northgate and Interquest Parkway Interchanges for culvert work at the Monument Creek Branch. Speeds have been reduced to 60 mph in this area.  These restrictions include

Wed., April 25, 9 a.m. to 3 p.m. --  Daytime Lane Restrictions on Southbound I-25

  • Single right lane restrictions at southbound I-25 between Northgate and Interquest Parkway Interchanges (milepost 154 – 156) for culvert work.

Wed., Thurs., and Mon., April 25, 26 and 30 -- Overnight Lane Restrictions on I-25 for Traffic Shift

  • Double lane restrictions on southbound I-25 between Northgate and Interquest Parkway interchanges (milepost 154 – 156) for striping of southbound traffic switch. Traffic will be shifted to the right with reduced lane widths. There will be only one lane open.

    • Wednesday night, April 25, 9 p.m. to 5 a.m.

  • Double lane restrictions on northbound and southbound I-25 between Interquest Parkway and Northgate interchanges (milepost 154 – 156) for striping of northbound traffic switch and to place barrier on southbound I-25. Traffic will be shifted to the right with reduced lane widths. There will be only one lane open.

    • Thursday night, April 27, 9 p.m. to 5 a.m.

  • Double lane restrictions on northbound I-25 between Interquest Parkway and Northgate interchanges (milepost 154 – 156) to place barrier on northbound I-25. Traffic will be shifted to the right with reduced lane widths. There will be only one lane open.

    • Monday, April 30, 9 p.m. to 5 a.m.

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

PROJECT INFORMATION: The Colorado Department of Transportation (CDOT) has initiated a project at the Monument Creek Branch under I-25 northbound and southbound lanes between Northgate and Interquest Parkway Interchanges to repair the box culverts (MP 154.9 and MP 155.0). 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 activities include:

  • Concrete box culvert and wingwall repairs

  • Construction of concrete drop structures to prevent future failures

  • Channel Armoring with boulders, riprap and grouted riprap

  • Placement of embankment material to restore the Monument Creek Branch channel and surrounding areas

  • Seeding of disturbed areas

  • Prebbles Meadow Jumping Mouse habitate allowances

For updated project information call 719-396-5585. For information regarding CDOT projects statewide, log on to www.codot.gov

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