High Line Canal Trail Improvements
High Line Canal Trail Improvements
Learn about all High Line Canal projects
Visit our Trail Notices + Detours page to learn about projects which may impact your Canal travel.
The High Line Canal Conservancy is working closely with Denver Water and the 11 jurisdictions along the path to improve the trail as a place for people and protect the natural habitat for vegetation and wildlife. Projects along the trail include enhancements such as new navigational signage, Canal-wide initiatives such as tree care, as well as more significant infrastructure projects such as roadway underpasses and stormwater projects. Please see below for updates and the current status of all the major projects along the 71-mile greenway.
HIGH LINE CANAL PROJECT UPDATES MAP
The map highlights current High Line Canal projects taking place along the 71-mile trail.
Trail Project List
Take a look at what’s happening on the High Line Canal and what’s been completed this year! Scroll to the bottom of the page to see completed projects in past years.
(click project title for more information)
Completed
Mile 30: Little Dry Creek Property Initial Planning
Project Name: Mile 30: Little Dry Creek Property Initial Planning
Project Status: Initial planning is complete

Project Location: Little Dry Creek Property, Centennial
Project Cost: The Conservancy secured funding from the City of Centennial and private donors
Mile 20: Lee Gulch Lookout
Project Name: Mile 20: Lee Gulch Lookout
Project Type: Amenity Area
Project Status: Project complete. Opening celebration was held on May 12th, 2026.

Project Location: Littleton at the juncture of the High Line Canal Trail and Lee Gulch Trail.
Project Cost: The project was jointly funded by SSPRD, the Conservancy and Arapahoe County Open Spaces.
Mile 34: Quincy Farm Pedestrian Bridge Replacement
Project Name: Mile 34: Quincy Farm Pedestrian Bridge Replacement
Project Status: The project was completed in Summer 2026
Project Location: High Line Canal South of Quincy Avenue
Project Cost: The City of Cherry Hills Village funded the project with matching funds from the Conservancy
Mile 34: Quincy Farm Pond Enhancements
Project Name: Mile 34: Quincy Farm Pond Enhancements
Project Status: Dredging was completed Fall 2025; planting was completed Spring 2026
At Quincy Farm, there is a 1930’s irrigation pond located next to the High Line Canal. The pond provides trail users with many opportunities to view wildlife. The pond has filled with sediment over the years and become very shallow. When the City took over management of the Farm in 2016, the pond was suffering from extreme algae blooms due to the shallow depth and lack of aeration. The City dredged the pond to make it smaller and deeper to improve the water quality and create an improved habitat for wildlife.
Project Location: High Line Canal south of Quincy Ave
Project Cost: The City of Cherry Hills Village secured matching funding from Arapahoe County Open Spaces
Implementation
Mile 37: Skeel Reservoir
Project Name: Mile 37: Skeel Reservoir
Project Status: Under construction
Denver’s Department of Transportation and Infrastructure (DOTI) has begun a redesign of Skeel Reservoir located in the southeast corner of the Wellshire Golf Course adjacent to the High Line Canal. The reservoir is no longer used to irrigate the golf course, and the existing earthen dam is considered a high-risk dam according to the State Engineer’s Office.
The goal of the project is to decommission the dam and convert the area to a 100-year stormwater detention pond with stormwater quality control. The project will significantly reduce the risk of flooding to downstream properties, protect human health, and help deliver cleaner stormwater to Denver waterways. Project upgrades will include site grading to provide a safe and operational golf driving range, as well as new inlets in the driving range area to capture local runoff and route it to the existing storm sewer system instead of allowing it to flow across the golf course fairways.
Project Location: Skeel Reservoir on Wellshire Golf Course
Project Cost: Funded by City and County of Denver DOTI
Miles 57-60: North Aurora Canal Improvement Zone
Project Name: Miles 57-60: North Aurora Canal Improvement Zone
Project Status: Construction anticipated in 2026

Project Location: High Line Canal between E. 6th Avenue and E. 17th Avenue
Project Cost: The Conservancy secured funding through the GOCO Centennial grant program and an Adams County Open Space Grant
Mile 60: Triple Creek Trailhead: Phase 2 Improvements
Project Name: Mile 60: Triple Creek Trailhead: Phase 2 Improvements
Project Status: Construction anticipated in 2026-2027

Project Location: Triple Creek Trailhead, at the juncture of the High Line Canal Trail and Sand Creek Regional Greenway
Project Cost: The Conservancy has secured funding through the GOCO Centennial grant program and Aurora has secured funding through Arapahoe County Open Spaces
Mile 25: deKoevend Park Pollinator Garden Pilot
Project Name: Mile 25: deKoevend Park Pollinator Garden Pilot
Project Status: Planting planned for Fall 2026
The Conservancy and South Suburban Park and Recreation District (SSPRD) are partnering to plant a pollinator garden along the Canal on the west side of deKoevend Park. This landscape enhancement will increase biodiversity on the Canal and create a place to pause and connect with nature between the Canal and Big Dry Creek. New irrigation and planting beds were installed in Fall 2025 and pollinator plants will be planted in Fall 2026.
Project Location: High Line Canal on the west side of deKoevend Park
Project Cost: The planting project and establishment maintenance is being funded by the Conservancy
Miles 70-71: Painted Prairie Trail Completion: The Canal's Final Mile
Project Name: Miles 70-71: Painted Prairie Trail Completion: The Canal's Final Mile
Project Status: Trail and park construction underway, completion date unknown
The Painted Prairie development, located north of Green Valley Ranch between E. 56th Ave and E. 64th Ave, is currently being built out and will include the final mile of the Canal trail. The developer is preserving a few segments of the historic ditch, including the furthest north of the remaining headgates (#164 of what was historically 165) and will add park space along the Canal Trail. When completed, the Canal Trail will end at E. 64th Avenue at an underpass that connects trail users under the roadway to the Second Creek Trail.
Project Location: High Line Canal between E. 56th Ave and E. 64th
Project Cost: The project is funded by the developer and the newly formed metro district will be responsible for maintenance once the project is completed
Miles 12-14: Santa Fe Drive/U.S. 85 Stormwater Project
Project Name: Miles 12-14: Santa Fe Drive/U.S. 85 Stormwater Project
Project Type: Stormwater Project
Project Status: Agreement was implemented in the fall of 2021 and construction is now complete
As a part of the Santa Fe Drive/Highway 85 widening project, Douglas County signed a license agreement with Denver Water to formalize the discharge of stormwater into the Canal at Spring Gulch. Stormwater runoff from the highway improvement project is now pretreated before being discharged through an existing 72-inch storm sewer pipe that flows into the Canal. Douglas County has also taken responsibility for maintaining and managing this portion of the Canal to ensure the safe passage of stormwater.
Project Location: 1.5 miles of the Canal from Spring Gulch to Marcy Gulch
Project Cost: Douglas County will be responsible to fund maintenance of this reach of the Canal
Mile 7: Solstice Stormwater Project and Linear Park
Project Name: Mile 7: Solstice Stormwater Project and Linear Park
Project Type: Stormwater Project
Project Status: Construction of the linear park is still in progress but the High Line Canal trail is open to the public
Solstice is a new residential development in Douglas County just south of Chatfield State Park. The Canal runs through the development and the developer has pulled back the banks of the Canal to convey stormwater. The developer is featuring the Canal at the center of the development, incorporating the Canal corridor into the 37-acre Solstice Park that will expand the size of the open space on either side of the Canal. The developer has planted trees to reestablish vegetation in the area, leveraging the additional stormwater that will make its way to the Canal. Construction of the stormwater infrastructure has been completed and while construction of the linear park is still in progress, the High Line Canal trail is open to the public. Visit our blog for more information.


Image credit: Solstice
Trail Notice: While the trail is open to the public, construction continues in the area as the developer plants trees and builds out the linear park.
Project Location: Douglas County, Mirabelle Metro District; High Line Canal west of Roxborough Park Road
Project Cost: The project is funded by the developer and the Canal will be cared for in this reach by the newly formed Mirabelle Metro District
Miles 2-71: Signage and Wayfinding
Project Name: Miles 2-71: Signage and Wayfinding
Project Type: Signage
Project Status: Installation of wayfinding kiosks, rules signs and trailhead monuments completed. Additional street crossing signage and wayfinding signs were installed in Spring 2026.

Project Location: Canal-wide
Project Cost: Each jurisdiction along the Canal is funding part of their sign package, with Arapahoe County Open Spaces and the High Line Canal Conservancy providing matching funds. The total project cost for this phase of signage is $506,332.
Mile 57: 8th Avenue Pedestrian Bridge
Project Name: Mile 57: 8th Avenue Pedestrian Bridge
Project Status: Construction began in summer of 2026.

Project Location: High Line Canal at 8th Ave
Project Cost: The Conservancy raised funds for this project from The Colorado Health Foundation ($180,000) and Aurora has secured a match from Arapahoe County Open Spaces ($180,000)
Miles 48-50: Windsor Trail Surface Enhancements
Project Name: Miles 48-50: Windsor Trail Surface Enhancements
Project Type: Trail Enhancements
Project Status: Construction began in June of 2026, starting on the easternmost trail segment between Dayton and Havana

Project Location: High Line Canal from Parker Road to Havana Street
Project Cost: The project is funded jointly by the City and County of Denver and the High Line Canal Conservancy with a Great Outdoors Colorado grant
Mile 39: Yale and Holly Underpass
Project Name: Mile 39: Yale and Holly Underpass
Project Type: Underpass
Project Status: Construction began in September 2025
The City and County of Denver, in partnership with Arapahoe County, is advancing design and engineering of an underpass at the challenging intersection of E. Yale Ave and S. Holly St at the border of Denver and Unincorporated Arapahoe County. Funding for this project was secured in Denver’s 2017 Elevate Denver Bond Program, and in 2023, the City and County of Denver received federal funding to complete the project. Construction began in September 2025 and will be completed in 2026
Project Location: High Line Canal west of the intersection of E. Yale Ave and S. Holly St
Project Cost: The $16.9 million project is funded by Denver’s 2017 General Obligation Bond, Arapahoe County Open Spaces and an $11.7 million federal grant
Miles 26-33: Greenwood Village Irrigation System Design
Project Name: Miles 26-33: Greenwood Village Irrigation System Design
Project Status: A first phase of irrigation, focused on the area around Marjorie Perry Nature Preserve, is currently being installed

Project Location: High Line Canal in Greenwood Village
Project Cost: The project is being funded by Greenwood Village with support from Arapahoe County Open Spaces and the Conservancy
Mile 2: High Line Canal Origin Trailhead Design
Project Name: Mile 2: High Line Canal Origin Trailhead Design
Project Type: Trailhead Enhancement
Project Status: Construction anticipated in 2026-2027

Project Location: Waterton Road and the High Line Canal, where the Canal emerges from Waterton Canyon
Project Cost: Design has been funded jointly by the Conservancy and Douglas County Parks, Trails and Building Grounds
Planning
Mile 22: Euclid Avenue Complete Streets
Project Name: Mile 22: Euclid Avenue Complete Streets
Project Status: Plans are being finalized
As part of Phase 2 of the Euclid Ave Complete Street project, the High Line Canal Trail crossing of Euclid Ave will be improved with a raised pedestrian crossing with Rectangular Rapid Flashing Beacons (RRFBs). The crossing distance will be reduced from an existing 38 feet to
24 feet due to widened sidewalks/shared use path and narrowed travel lanes.
Plans are being finalized and construction is anticipated to take place starting in late May and last until early August. Construction will be phased
to minimize the duration of impacts to the Canal trail crossing, as well as provide an appropriate detour along Euclid Ave.
Project Location: High Line Canal at Euclid Avenue
Project Cost: City of Littleton
Mile 18: Mineral Avenue Underpass Feasibility Study
Project Name: Mile 18: Mineral Avenue Underpass Feasibility Study
Project Status: Feasibility Study underway
The City of Littleton will be completing a feasibility study to evaluate the viability of an underpass for the High Line Canal at Mineral Ave. This study will revisit and expand upon a 2004 conceptual study that identified an underpass as the preferred option, updating it to reflect current site conditions, community goals, and mobility needs. This project is not included in prior corridor-wide plans by Arapahoe County or the High Line Canal Conservancy but is supported by the City’s 2019 Transportation Master Plan and growing community demand for a safer, more comfortable crossing. This feasibility study is funded by a grant from Arapahoe County Open Spaces.
Project Location: High Line Canal at Mineral Avenue
Project Cost: The City of Littleton has secured partner funds from Arapahoe County Open Spaces
Miles 20-22: Littleton Safer Streets Pilot Projects
Project Name: Miles 20-22: Littleton Safer Streets Pilot Projects
Project Status: These pilot projects will be installed in 2026
As part of the Safer Streets Littleton program, crossing improvements at the High Line Canal crossings along Gallup Street and Fremont Avenue are planned for installation in 2026. These “pilot” projects use quick-build materials and will include curb extensions and other traffic calming elements.
Project Location: High Line Canal at Gallup Street and Fremont Avenue
Project Cost: Safer Streets Littleton (local funding through 3A)
Miles 51-54: Central Aurora Canal Improvement Zone
Project Name: Miles 51-54: Central Aurora Canal Improvement Zone
Project Status: Construction anticipated in 2026-2027

The current designs include a seating area with interpretive signage north of Alameda Avenue, crossing safety improvements at Moline Street and accessible access points at E. 2nd Avenue and Ursula Street. Designs will be completed in 2026.
Project Location: High Line Canal between E. Alameda Ave. and Potomac St.
Project Cost: The Conservancy has secured funding through the GOCO Centennial Grant Program
Miles 65-68: Green Valley Ranch Canal Improvement Zone Design
Project Name: Miles 65-68: Green Valley Ranch Canal Improvement Zone Design
Project Status: Construction is anticipated to begin in 2026

Project Location: High Line Canal in Green Valley Ranch
Project Cost: The Conservancy has secured funding through the GOCO Centennial program
Mile 59: Colfax Underpass Design and Engineering
Project Name: Mile 59: Colfax Underpass Design and Engineering
Project Status: Federal funding secured, design and engineering underway
Arapahoe County Public Works is partnering with the City of Aurora and Adams County to design an underpass for the Canal’s first crossing of Colfax just north of Laredo Elementary School. This project received a federal grant in 2023 that will support design, engineering and eventually construction. By the time design, engineering, right-of-way and utility work is completed and all approvals are in place, construction could begin as early as 2028.
Project Location: High Line Canal at Colfax Avenue
Project Cost: Federal funding will be matched with support from Arapahoe County Open Spaces, Aurora Parks, Recreation and Open Space and Adams County
Miles 43-48: Four Square Mile Trail Surface Enhancements
Project Name: Miles 43-48: Four Square Mile Trail Surface Enhancements
Project Type: Trail Enhancements
Project Status: Design is currently at 90% and construction of a first phase is anticipated to begin in 2027

Project Location: High Line Canal from Quebec Street to Parker Road
Project Cost: Design and engineering is funded jointly by Arapahoe County Open Spaces and the High Line Canal Conservancy through a grant from Great Outdoors Colorado
Miles 41-43: Yale Avenue Crossing Enhancements
Project Name: Miles 41-43: Yale Avenue Crossing Enhancements
Project Status: Installation is anticipated in Summer 2026
The High Line Canal crosses Yale Avenue four times – more than any other roadway! Two of these crossings will be getting safety improvements, with ADA upgrades and blinking lights for pedestrians (aka Rectangular Rapid Flashing Beacons or RRFBs).
Project Location: High Line Canal second and third Crossings of Yale Avenue, near Bible Park
Project Cost: City and County of Denver are funding partners in this project
Mile 33: Cherry Hills Village Irrigation Extension and Tree Planting
Project Name: Mile 33: Cherry Hills Village Irrigation Extension and Tree Planting
Project Status: Irrigation installation and planting planned for 2026
Project Location: North of Belleview Avenue
Project Cost: The City of Cherry Hills Village will install the irrigation line and the Conservancy will contribute to the planting of new trees
Mile 25: Goodson Recreation Center Access Road Improvements
Project Name: Mile 25: Goodson Recreation Center Access Road Improvements
Project Status: The project is currently at 100% design
South Suburban Park and Recreation District is currently designing safety improvements where the High Line Canal crosses the Goodson Recreation Center access road. This is a well-used section of the Canal and a busy access road that services both the recreation center and a retirement community. Safety improvements could include improved signage, new maintenance access to the trail and a raised crosswalk.
Project Location: High Line Canal at Goodson Recreation Center Access Road
Project Cost: Design is being funded by SSPRD
Miles 22-23: Littleton Irrigated Tree Planting Pilot
Project Name: Miles 22-23: Littleton Irrigated Tree Planting Pilot
Project Status: Irrigation installation and planting planned for 2026

Project Location: City of Littleton between the 2nd and 3rd crossings of S. Broadway
Project Cost: The City of Littleton has secured funding from the Conservancy and Arapahoe County Open Spaces
Mile 22: Broadway and Arapahoe Underpass Design and Engineering
Project Name: Mile 22: Broadway and Arapahoe Underpass Design and Engineering
Project Status: Design and engineering underway
Arapahoe County Public Works is partnering with the City of Littleton and City of Centennial to design an underpass at the Canal’s second crossing of S. Broadway, just south of Arapahoe Rd. This project received a federal grant in 2023 that will support design, engineering and utility relocations.
Project Location: The High Line Canal’s second crossing of S. Broadway
Project Cost: Federal funding will be matched with support from Arapahoe County Open Spaces, City of Littleton and City of Centennial
Mile 17: C-470 Trail Connection Design
Project Name: Mile 17: C-470 Trail Connection Design
Project Status: Design will be completed in 2026
The City of Littleton has secured federal funding to improve the connection between the High Line Canal Trail and the C-470 Trail (also called the Centennial Trail) just south of County Line Rd. This project will improve east/west connectivity within Littleton and improve the safety of this challenging trail juncture.
Project Location: High Line Canal south of County Line Road
Project Cost: The City of Littleton has secured federal funding to support the project
History of Completed Projects
See improvement projects that have been completed in previous years below. Get more details on these projects by visiting the Progress Reports on the Resources page of our website.
Hours + Rules
Hours: Open year round, 5 a.m. – 11 p.m., subject to modification by recreation agencies.
Uses: walking, nature viewing, bicycling, hiking, horseback riding, picnicking.
For more information on rules and amenities in the specific jurisdictional reaches, please visit the following:
- Denver Water Recreation
- Douglas County Parks, Trails and Building Grounds Division
- Metro District of Highlands Ranch Parks and Open Space
- South Suburban Parks and Recreation
- Greenwood Village Parks, Trails and Recreation Department
- Cherry Hills Village Parks, Trails and Recreation Department
- Denver Parks and Recreation Department
- Aurora Parks, Recreation and Open Space Department


