Denver Celebrates Weir Gulch Improvements

Denver Celebrates Weir Gulch Improvements

Published on October 21, 2026

DENVER - Today, representatives of the City and County of Denver, Mile High Flood District, Denver Housing Authority, and the community celebrated the completion of critical safety improvements along Weir Gulch that reduce flood risks, create new outdoor amenities, and support affordable housing in the Sun Valley neighborhood.

Located north of West Eighth Avenue between Federal Boulevard and the South Platte River, Weir Gulch Segment 1 reflects decades of community input, planning and coordination. The project was designed and constructed alongside the Sun Valley redevelopment effort to address flood risks and support the neighborhood's continued transformation.

Major improvements made include replacing an outdated concrete culvert with a new bridge, installing a visually aesthetic new drop structure to control water velocity, and replacing undersized stormwater pipes with a new, natural open channel with capacity to convey more stormwater safely to the South Platte River. See attached photos.

Beyond flood mitigation, the project improves connections to the South Platte River Trail and the future Sun Valley Riverfront Park, creating more opportunities for residents to walk, bike and enjoy outdoor spaces. Improvements along Weir Gulch also include hundreds of new trees and plants, supporting habitat restoration and a healthier local ecosystem.

City and community leaders celebrated the project's completion today with a ribbon-cutting ceremony on the new Decatur Street bridge.

"When we say we're building a more equitable Denver in every neighborhood, this is the exact kind of investment that brings that promise to life," said Mayor Mike Johnston. "In Sun Valley, we're increasing flood safety while creating a place where families can gather, neighbors can walk their dogs, and everyone can enjoy the river and the outdoors."

"We are not just celebrating the completion of a bridge in Sun Valley, we are righting the course of history in a direction that values our families, our kids, and our communities," said Denver District 3 Councilwoman Jamie Torres. "Many Westsiders live with the memories of the 1965 flood and how devastating it was to this very community. We are fixing infrastructure to keep the next seven generations safer and better protected."

The Weir Gulch improvements reflect a coordinated effort among local, regional and federal partners to address longstanding flood risks and deliver additional benefits to the Sun Valley community.

"Weir Gulch has long been one of Denver's most significant flood risks, and today we're celebrating a major step toward changing that," remarked Laura Kroeger, executive director of Mile High Flood District. "This project shows what's possible when partners plan together and then deliver on the ground. The new Decatur Street bridge and channel improvements do more than move water safely. They give the Sun Valley community a healthier stream, better trail connections and a place people will want to spend time. We're grateful to the City and County of Denver, U.S. Army Corps of Engineers, our federal, state, and local elected officials, and every partner who helped make this a reality."

The project also demonstrates the importance of regional investment in addressing flood risks and strengthening local infrastructure.

"Flooding doesn't stop at city limits, and that's why the Mile High Flood District exists," said Thornton Mayor Jan Kulmann and Mile High Flood District Board Chair. "Our board represents communities across the Denver metro area, and projects like Weir Gulch show the value of pooling regional resources to protect the neighborhoods that need it most. This investment reduces risk for families and businesses in Sun Valley while creating lasting public amenities. I'm proud of the district staff and our partners in Denver for bringing this project across the finish line."

Reducing flood risk in Sun Valley was also significant in supporting the neighborhood's affordable housing redevelopment.

"Investments in public infrastructure are as important as the housing we build in creating strong, connected neighborhoods," said Erin Clark, chief real estate investment officer for the Denver Housing Authority. "The Weir Gulch improvements will make it easier for Sun Valley residents to access nature, move safely through their neighborhood and connect to the surrounding community. These are investments that improve everyday life for residents and help make Sun Valley a better place to call home."

• Press release
• Transportation and Infrastructure