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Jackson Street Storm Drain System

The Jackson Street Storm Drain Project will provide a critical link between the lower and upper Montclair Basin system for managing stormwater and offer improved flood protection for residents and businesses in the project area between Colfax and 12th Avenues, from Jackson to Albion Streets.

 

The Montclair Drainage Basin is over nine square miles and is Denver’s largest drainage basin without an open waterway. The result is significant, persistent flooding problems for homes and businesses during heavy rainstorms and other storm events. Rain that falls in the drainage basin becomes storm runoff that flows in a northwesterly direction, ultimately draining into the South Platte River.

The Montclair Basin has been identified as a priority basin for storm drainage and water quality improvements. The expanded and improved Jackson Street Storm Drain System will ultimately provide additional capacity for the upstream area around Hale Parkway. 

Construction Updates
Week of October 26, 2020

  • Crews are expected to complete installation of the new pipe below ground under E. Colfax Avenue at the beginning of November 2020 and reopen E. Colfax in both directions.
  • Around November 10, access to National Jewish Health (NJH) will move back to E. Colfax Avenue from its temporary location off E. 14th Avenue.
  • Crews will begin storm pipe installation in the south end of the NJH parking lot and under E. 14th Avenue. During this phase of construction, which is expected to be completed in May or June 2021:
    • Full lane closures of E. 14th Avenue will be required between Garfield and Harrison Streets to ensure the safety of the construction crews as they install the pipe twenty-two feet below ground.
    • The intersections of Garfield and 14th and Harrison and 14th will remain open to through traffic.
    • Local vehicular traffic will be maintained in the area, with the exception of the closure at E. 14th Avenue and Jackson Street.
    • Sidewalks on the north side of 14th between Garfield and Harrison will be closed, while sidewalks on the south side of 14th will remain open.
    • Access to residences and businesses will be maintained during construction.
  • On Tuesday, October 27, 2020, a digital message board is scheduled to be placed on E. 14th Avenue west of York Street to forewarn and encourage eastbound travelers to detour onto York Street south to E. 12th Avenue or onto Josephine Street north to E. Colfax Avenue. Additional detour signs will be in place in the project area as well to direct travellers to alternate routes.
  • Until crews finish installing the stormwater pipe in the eastbound lanes of E. Colfax Avenue in early November, the traffic plan remains as follows:
    • The westbound lanes of E. Colfax are open and adjusted to provide one eastbound and one westbound lane for traffic.
    • The eastbound lanes of E. Colfax Avenue around Jackson Street are closed.
    • Vehicles traveling eastbound on E. Colfax Avenue are not permitted to make left turns onto Monroe, Jackson and Harrison Streets due to safety and traffic congestion concerns but may make a left turn at Madison Street and at the light at Garfield Street.
    • Vehicles traveling westbound on E. Colfax Avenue are not permitted to make left turns onto Madison, Monroe and Garfield Streets due to safety and traffic congestion concerns.
    • Access to businesses, parking lots and sidewalks in the project area will be maintained during construction, with the exception of the sidewalk adjacent to National Jewish Hospital along E. Colfax Avenue.
  • The RTD bus stops at Garfield on both the north side and south side of E. Colfax Avenue will be closed during this phase of construction.
  • Construction is also underway on the NJH's new Center for Outpatient Health in the former patient parking lot, situated at E. Colfax Avenue, between Jackson and Garfield Streets. For more information about this project, please visit https://nationaljewish.org/center-for-outpatient-health/overview.
 

 

Jackson Street project area shown in green

 

Overview of Construction Timeline & Traffic Impacts

The construction timeline has been adjusted to reflect the extra time needed for construction across E. Colfax Avenue due to May storm events and the impacts of COVID-19.

Early January 2020 — late July 2020 (7 months)

Construction in westbound lanes of E. Colfax Avenue at Jackson Street

  • During this phase of construction, the westbound lanes of E. Colfax Avenue around Jackson Street will be closed, while the eastbound lanes of E. Colfax will remain open and adjusted to provide one eastbound and one westbound lane for traffic.
  • Access to Jackson Street from E. Colfax will not be open to vehicles during work in westbound lanes of E. Colfax.

Late July 2020 — late October 2020 (3 months)

Construction in eastbound lanes of E. Colfax Avenue at Jackson Street

  • The westbound lanes of E. Colfax will be reopened and adjusted to provide one lane of traffic in each direction.
  • Access to Jackson Street from E. Colfax will reopen.
  • The traffic plan on E. Colfax will “flip” for pipe installation to begin in the eastbound lanes of E. Colfax Avenue around Jackson Street and the eastbound lanes will be closed.
  • NJH remains accessible from 14th Avenue at Jackson Street.

January 6, 2020 — mid November 2020 (10 months)

  • North end of Jackson ROW/NJH parking lot (Driveway to Circle Entrance)

Mid November 2020 — May 2021 (7 months)

South end of Jackson ROW/NJH parking lot (Circle Entrance into E. 14th Avenue) and East 14th Avenue between Garfield and Harrison Streets

  • Vehicle and pedestrian access to NJH will move back to E. Colfax from the temporary location on E. 14th
  • Pedestrian access from NJH parking lots south of E. 14th Avenue will be across E. 14th at Harrison Street.
  • Full lane closures will be required on E. 14th Avenue in the area around Garfield, Jackson and Harrison Streets during the final phase of the project to ensure the safety of the construction crews as they install the new pipe.
  • Detours will be put in place during this phase of construction

Schedules are subject to change based on weather and other factors.

two DOTI employees post standing inside 126-inch stormwater pipe 

March 2020

This large, 126-inch stormwater pipe will provide additional capacity for water to flow and reduce flood risks in the area.

 
Project Status: Construction Beginning

Work for Phase 1 of the project began in January 2020 on the north side of Jackson Street across E. Colfax Avenue, continuing through the parking lot at National Jewish Health, then eastward one half block on E. 14th Avenue toward Harrison Street. Work is expected to continue through Spring 2021.

There will be future design and construction for Phase 2, which will connect on the east side of Colorado Boulevard at about Albion Street near Hale Parkway. 

14th Avenue Detour - November 2020 (PDF)


Contacts

Project Hotline: 720-460-9055 (English & Español)

Email: ccd.constructionupdates@gmail.com

Ames Construction

Perry Lopez, on-site construction contact
303-995-2278‬
perrylopez@amesco.com

Rob Wise, Project Manager
RobWise@amesco.com

City and County of Denver

Terry Martin, Project Manager
Department of Transportation and Infrastructure, Infrastructure Project Management
Terry.Martin@denvergov.org