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Work on I-25, Charter Oak Ranch Road, South Academy continues to progress


Last updated 10/5/2022 at 9:26am | View PDF

Courtesy of CDOT

This recent photo shows progress on Charter Oak Ranch Road. CDOT estimates this particular project to be complete sometime in November.

The Military Access, Mobility & Safety Improvement Project (MAMSIP) continues to progress on multiple fronts, including the heavily travelled I-25 corridor through Fountain, but also several other locations.

In a recent update on the project, the Colorado Department of Transportation (CDOT) said one component – Charter Oak Ranch Road near Fort Carson's Gate 19 – is nearly complete, with a tentative finish date of November of this year.

This week a new traffic configuration went into effect at Charter Oak Ranch Road, with detours using lanes of the new roundabout. Traffic from Santa Fe Avenue will turn north on Champlin Lane, west on Champlin Drive, and south on Charter Oak Ranch Road and proceed south through the roundabout. Traffic from Fort Carson will travel north through the roundabout, turn east on Champlin Drive, south on Champlin Lane, and east onto Santa Fe Avenue.

Meanwhile, work on South Academy Boulevard bridges will require overnight work in mid-October as SEMA Construction crews install eight girders. This will include an overnight closure of southbound I-25, from 8 p.m.-5 a.m. Exact date to be announced. At that time, southbound I-25 traffic will need to use the South Academy Boulevard off-ramp and on-ramp, and there will be no access from I-25 to westbound South Academy Boulevard. A full closure of South Academy will have a detour in place.

All business access will remain open throughout construction. Motorists are advised to take alternate routes when possible, and bicyclists and pedestrians are reminded of the restricted access around the site during construction.

CDOT states replacement of these bridges will result in significant improvements in operations and a reduction in maintenance costs over the life of these assets and ensure reliability for passenger, freight and utilizing the corridor. These replacement bridges will be designed for a 75- to 100-year life.

Project Overview

MAMSIP includes improvements to South Academy Boulevard, the I-25 corridor along Fort Carson, and Hwy. 94 connecting Peterson and Schriever Air Force bases and central Colorado Springs. This road project is designed to improve access and commuter safety around area military installations.

Initial work on MAMSIP components began in 2020 after the announcement of the federal BUILD Grant to the tune of $18.35 million. Altogether, the MAMSIP work is expected to cost about $159 million, funded through the BUILD Grant and contributions from CDOT, El Paso County, and the Pikes Peak Rural Transportation Authority. The full project completion is scheduled for late 2024.

Recent updates and upcoming work

CDOT and SEMA Construction continue work on improvements on I-25 between South Academy Boulevard and North Santa Fe Avenue (Mile Point 135-127). As part of the I-25 improvement project, traffic has been shifted southbound I-25 easterly to the newly constructed inside lanes between South Academy Boulevard and Santa Fe Avenue.

Traffic on I-25 is head-to-head, separated by temporary barrier with 11-foot lanes and 2-foot shoulders. Speed limit is reduced to 55 MPH. This traffic switch will be in place through early 2023 to allow for the construction of the new southbound lanes, with concrete that will provide increased stability and durability.

Interstate-25 Rehabilitation 

Work includes concrete surface treatment to provide an improved riding surface for this 7.5-mile segment, widening the inside and outside shoulders to 12 feet, installation of median barriers the entire length of this corridor, widen four bridges and installing infrastructure to support transportation technologies and lengthening of deceleration lane with Colorado Highway 16.

August/September 2022 - Accomplishments

• Embankment and Aggregate Base Course install on southbound I-25 between Mesa Ridge (CO 16) & Santa Fe

• Full-Depth Reclamation (FDR) install on southbound I-25 outside shoulder between CO 16 and Santa Fe

• PCCP (concrete paving) on southbound I-25 between Mesa Ridge and Santa Fe

• Drainage installations across I-25 (median to west)

• Bridge deck repairs at Dry Wash and Clover Ditch

• Removals include guardrail, end anchorages, lighting and signs

• Top soil stockpile, control measure installs and maintenance

• Pothole and guardrail repairs

October 2022 – Upcoming Work

• Asphalt paving shoulders on southbound I-25 between South Academy Boulevard and Santa Fe Avenue

• PCCP (concrete paving) between CO 16 & Santa Fe Avenue (SB)

• Embankment work on southbound I-25 between South Academy Boulevard and Santa Fe Avenue

• Rip Rap channel protection at Dry Wash and Clover Ditch

Traffic impacts:

Nighttime lane closures/daytime shoulder closures periodically, including Oct. 5 and 8 overnight.

I-25 Bridges over South Academy

Work includes replacement of two bridges on I-25 crossing over South Academy Boulevard.  

Recent Accomplishments

• Continue installation of soil nail wall at Abutment #3

• Continue construction of pier cap (Phase 1)

• Mechanically stabilized earth (MSE) wall installation

• Set precast wall panels followed by closure pours

Upcoming Work

• Soil Nail Wall Installation

• Abutment 1 backfill (structural)

• Abutment 3 work includes (leveling pad, precast panels, MSE Backfill)

• Girder placement (first phase)

Traffic impacts:

• Nighttime lane closures/daytime shoulder closures

South Academy Boulevard

CDOT and El Paso County continue working through the final pre-construction phase in developing construction plans for South Academy Boulevard along this mile-and-a-half stretch. Work will include widening to three dedicated lanes in each direction from I-25 to Milton E. Proby Parkway, scour protection to improve the reliance of bridges crossing Fountain Creek, and noise abatement.

2023 Upcoming Work

• Scour protection work at Fountain Creek

• Drainage installation

• Utility relocation

Charter Oak Ranch Road

Work includes roadway, drainage and structural improvements to improve the entrance to Gate 19 of Fort Carson.

August/September 2022 - Accomplishments

• New detour access for Kroger's employee traffic and Fort Carson Gate 19.

• Embankment grading and compaction at intersection roundabout

• Aggregate base coarse placed at roundabout.

• Curb and gutter poured for median islands at roundabout

• Concrete paving and curb and gutter at roundabout

October 2022 - Upcoming Work

• PCCP concrete paving entering and exiting the roundabout

• Pour concrete sidewalk on Charter Oak Ranch Road

• HMA top mat asphalt paving on Charter Oak Ranch Road

• Install new barb wire fencing at property easements

• Install retaining wall on Charter Oak Ranch Road

• Begin forming drainage pond inlet and outlet structures

Traffic impacts:

Motorists should expect to see intermittent single lane closures Monday – Friday, 9 a.m. – 5 p.m. Flaggers will be available to assist motorists as needed. These lane closures will continue intermittently through fall 2022 to complete work.

Expected completion is November 2022.

Colorado Highway 94

Crews built an approximate mile-long passing lane on westbound CO 94 at Mile Point 5.5 to improve visibility and allow vehicles to safely pass along this stretch of highway. An eastbound turn lane will be added between North Franceville Coal Mine Road and Blaney Road, and a signalized "jug handle" intersection will be installed at Blaney Road, thereby removing slow moving traffic from the passing lane, and greatly improving efficiency of eastbound traffic.

August 2022 Accomplishments

• Completed Jug Handle, earthwork, lower mat paving, and drainage improvements along with eastbound widening of CO 94.

• No CO 94 Traffic Shifts this month – continue working on Jug Handle and eastbound CO 94 improvements.

• Blaney Road north of CO 94 will remain closed through Fall 2022 (detour in place for landfill access.

September 2022 Accomplishments

• Phase 2 traffic shift occurred the night of Sept. 22.

• All traffic shifted to eastbound side of CO 94. 

October 2022 Upcoming Work

South Academy Boulevard bridge work.

After Phase 2 Traffic Shift, crews will close South Blaney Road and place a detour along the new Jug Handle for temporary access to SH 94. This will allow the improvements to take place on South Blaney Road (widen, drainage, utility sleeves, paving of road from Jug Handle to SH 94.

• Commence westbound SH 94 widening

• Start traffic signal install at Blaney Road

• Sawcut/milling of asphalt and new widened shoulders

• Drainage improvements/relocations

Sign up for text alerts

The project team has implemented text messaging to alert the public of construction-related traffic impacts or when an incident is causing traffic delays. If you drive on I-25 between South Colorado Springs and Fountain, register for alerts: Text MAMSIP to 888-970-9665  


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