construction phasing

Project Phasing Overview

The new interchange and connection from I-25 to Voyager Parkway will be built in construction phases by Wildcat Construction.

During different phases of work, corridor lighting may fluctuate based on service availability from utility providers.

Progress update (by phase) as of January 2021:

Phase 1: I-25 detours - complete

The first phase constructed detours for I-25 in the existing center median south of North Gate Boulevard.
In mid-January 2020, all three lanes of northbound I-25 moved onto new detour pavement. In November 2020, traffic moved onto permanent pavement. Northbound I-25 detour removal is underway.
In early July 2020, all three lanes of southbound I-25 moved onto new detour pavement.

Phase 2: Northbound I-25 bridges - underway

With northbound I-25 traffic on the temporary detour, the contractor team built new bridges, highway sections, and ramps.
Bridge girders were placed on two bridges in May 2020.
Traffic moved onto the permanent pavement and new bridges in November 2020.
Storm sewer work is on-going.
Architectural walls are under construction.

Phase 3: Southbound I-25 bridges - underway

With southbound I-25 traffic on the temporary detour (July 2020), the contractor team is in the process of building the two new bridges.
Bridge girders were set in early September 2020; bridge deck and railing work are on-going.
Retaining walls are under construction.

Phase 4: Powers Boulevard bridges - underway

The contractor completed the new concrete box culvert for the future northbound I-25 off-ramp to North Gate Boulevard.
Bridge girders were placed on both bridges in summer 2020; bridge railing work continues.
Drainage work continues along with roadway grading and paving preparation.
Guardrail installation is underway.

Phase 5: North Gate Boulevard to southbound I-25 - underway

Wildcat completed constructing a new box culvert west of I-25.
A second box culvert is under construction.
Excavation and grading work continues for the new ramp alignments.

Phase 6: Spectrum Bridge to Voyager Parkway

Drainage work on-going.

CDOT I-25 & Powers Boulevard Water Quality Project

In a separate effort led by CDOT, the I-25 and CO 21 (Powers Boulevard) Water Quality project will install a new storm sewer system to drain the I-25 and Powers Boulevard interchange. CDOT and their contractor will install storm sewer pipes and build two permanent combined water quality and detention pond facilities. Pond A is immediately adjacent to the east side northbound I-25. Pond B is located in the center median adjacent to southbound I-25.

Find out more

I-25 & Powers Boulevard Interchange

I-25 & Powers Boulevard Interchange

construction phasing

Project Phasing Overview

CDOT I-25 & Powers Boulevard Water Quality Project