South Broadway & I-25 Improvement Projects

Travel Advisory

A new lane configuration is in place on South Broadway between Center and Ohio.  Traffic has been shifted to the left three lanes and the  right two lanes including the shoulder are closed. Temporary barrier, construction cones and signage are in place and caution is advised. 

While the sidewalk on the west side of Broadway between Exposition and Ohio is open to pedestrians and separated from live construction by protective fencing, caution is advised when walking through this section of the work zone. 

The width of four entryways to the parking lots on West Broadway at Exposition has been reduced to accommodate construction activities. These entrances serve Galleria of Stone, Quest Diagnostics (south parking lot/loading), Kitchens on Broadway and Performance Radiator. Business access will be maintained with ingress/egress coordinated by flagger operations.

On-street parking on E Exposition is only permitted on the south side between the alley just east of Broadway at ToyExus and Lincoln . The eastbound lane configuration on E Exposition consists of a single lane for through traffic and designated spaces for on-street parking. 

No on-street parking is permitted on the north side of E Exposition between Lincoln and Broadway as the two westbound lanes are strictly dedicated to through traffic.

Limited pedestrian access will continue on the north and south sides of E Exposition between Lincoln and Broadway while crews finish construction of sidewalks and curb ramps and perform utility and electrical work. 

The City and County of Denver and contract partner Hamon Infrastructure appreciate your patience and understanding during these construction related closures and restrictions.


Project Background

The City and County of Denver's is redesigning the interchange of I-25 and Broadway. The improvements aim to create a safe and efficient area for all transportation modes ̶ pedestrian, bicycle, transit, and automobile.

The redesign of the ramps to I-25 is intended to help ease congestion on Broadway and Lincoln, reduce the potential for crashes, enhance bicycle and pedestrian connectivity in the area, and improve access to and from RTD’s Broadway Station.

The improvements will also help accommodate economic development of the Gates District and Broadway Park redevelopment. This project will expand on previous improvements that have been implemented by Denver and CDOT. 

Project Features

  • Improves access to RTD’s Broadway Station by constructing a new north entrance through Exposition, allowing riders and transit buses to bypass the interchange area.
  • Increases the pedestrian and bicycle access to transit station by building new shared-use paths and rebuilding existing sidewalks.
  • Improves pedestrian and bicycle safety by building new, well-lit facilities with adequate protected space along and across Broadway and Exposition
  • Moves vehicles more efficiently with coordinated traffic signals and new lane configurations on Broadway, Ohio, and Lincoln.
  • New configuration of the southbound I-25 on-ramp minimizes backups on Broadway between Exposition Avenue and Kentucky Avenue

DOTI is committed to keeping people moving during construction. Crews will do as much work as possible to minimize effects. At the same time, there will be traffic shifts, lane reductions and detours during construction. DOTI will announce these changes as they are scheduled.

South Broadway and I-25 Improvement project map

Construction Update - week of March 1, 2021:

During the week of February 21 to February 27, crews performed several concrete pours and ramped up excavation, drainage and utility work on the west side of South Broadway and in the parking lot between Broadway and Bannock. Other work included continued planter irrigation structure and sleeve installations, and site wide curb and gutter and electrical work. 

Work this Week 

During this first week of March, crews will perform concrete pours on finished sections of the roadway on the west side of South Broadway from Exposition to Ohio and at the entryway to Performance Radiator. Other work includes irrigation sleeve installation, electrical and utility work, sidewalk and curb ramp upgrades on Exposition at South Broadway, and continued work in the parking lot for the new Exposition extension. 

Travel Advisory

Temporary barrier is in place on the west side of South Broadway from Exposition to Ohio and the right two lanes remain closed to through traffic from Center to Ohio.

Only two driveways are currently accessible - at the south loading dock of Quest Diagnostics and at the south end of Kitchens on Broadway. The other entrances are closed while crews excavate and perform utility and drainage work for this phase of the project. The sidewalk is open but caution is advised as the area is narrowed and protective fencing is in place to protect pedestrians from live construction areas.

Work in the parking lot between Broadway & Bannock

west view of work and poured roadway in the parking lot between Broadway and Bannock. When complete, this will constitute the extension of Exposition to Bannock.

Drainage/excavation in front of Galleria of Stone

North view of drainage and excavation in front of Galleria of Stone

New signal pole installed at Lincoln & Exposition

New signal pole at southwest corner of Lincoln at Exposition was installed on February 16, 2021

Wide view of new signals at Lincoln & Exposition

Wide view of new signs and signals at Lincoln and Exposition

Concrete pour in right three lanes of S Broadway

Area of new concrete pour behind barrier in the right three lanes of S Broadway.

Area of excavated parking lot and covered roadway

Area of excavated parking lot showing new section of covered roadway between Broadway and Bannock.

Area of concrete pour covered for drying/curing

Area of concrete pour on the right lane of S Broadway covered for drying and curing.

Crews excavating parking lot

Crews excavating parking lot between Broadway and Bannock.

Temporary striping and lane delineation

West view of Exposition showing temporary striping and lane delineation.

Finished roadway on E side of Broadway/Exposition

South view of finished roadway on the east side of S Broadway at Exposition

Current Phases

CONSTRUCTION - Phase I: Exposition Ave & Broadway

Phase I:

Phase I reconstructs Exposition Avenue from Lincoln to Bannock Street. This construction phase expands Exposition west of Broadway to future align with the Bannock Street extension and installs new traffic signals on Exposition at Broadway and Lincoln.

This phase also minimally widens and reconstructs Broadway for half a block south of Exposition to provide wider sidewalks and streetscape.

Meetings and Public Outreach Materials:

Project Updates and Schedule:

The construction of Phase I will begin in August 2020.  The duration of this phase is appx. one year.

DESIGN - Phase II: Broadway & I-25 Interchange

Phase II:

Phase II replaces the southbound on-ramp to I-25 from Broadway and finalizes the extension of Bannock Street. This phase focuses on the multimodal connection improvements on Broadway, Lincoln, Ohio, and Kentucky. This phase also includes the reconstruction and installation of new traffic signals on Ohio Avenue between Lincoln and Broadway into RTD’s Broadway Station.

Project Updates and Schedule:

The design of Phase 2 is underway, and will take about a year to complete.  Construction likely won’t begin until Q1 2022.

Schedule, maps, updates »

Prior Efforts

CONSTRUCTION COMPLETED - South Broadway & Mississippi Avenue

South Broadway Reconstruction Project Wraps Up

Denver's Department of Transportation and Infrastructure has reconstructed a stretch of South Broadway from Kentucky to Arizona and a section of Mississippi Avenue between the Consolidated Main Line (CML) Railway and Sherman Street. The project began in March 2016 with the goal of improving overall mobility for people on bikes, on foot and in vehicles. 

Schedule, maps, updates »

Engineering Design

Right of Way:

The City and County of Denver's Broadway Arizona to Exposition Project will be constructed in three to four phases. As each phase is funded for construction, the City and County of Denver (City) will follow the Federal Highway Administration (FHWA) guidelines for acquisition of required properties within the project corridor. This guidance provides the City will follow their standard process of completing Right-of-Way plans, then City Council passing an ordinance authorizing property negotiations and acquisitions. Upon ordinance passage the City will contact affected property owners and begin the negotiation discussions, offers will be made after appraisals or value finds are completed. The City reserves the right to utilize imminent domain but will continue to negotiate to meet fair value agreements through the acquisition process.

Impacts determined during the Environmental Assessment can be found on page 3-20 and 3-21 of this document:

South Broadway Environmental Assessment and Section 4(f) Evaluation(PDF, 7MB)

Final Design Project Scope:

The overall project scope for these two projects will reconstruct South Broadway from Kentucky Avenue to Arizona Avenue and Mississippi Avenue between the Consolidated Main Line Railway (CML) and Lincoln Street. Improvements will include roadway widening; multi-use paths from Arizona to Kentucky along Broadway and from the CML to Sherman along Mississippi; pedestrian and street lighting; landscape and streetscape; and upgraded signalized intersections at Broadway/Tennessee and Broadway/Mississippi.

Meetings and Public Outreach Materials:

2010–2012 public outreach materials

Planning Efforts

Adopted in April 2016, the I-25 and Broadway Station Area Plan guides the future growth around the station and surrounding neighborhoods. The Plan identified the I-25 Interchange and Broadway Reconstruction as a project that will enhance the multi-modal environment within the S. Broadway corridor.

I-25 and Broadway Station Area Plan(PDF, 13MB)