City of Colorado Springs / City Engineering / News

Mitigation efforts are underway along Austin Bluffs Parkway to provide channel stabilization and protect critical infrastructure
Thursday, January 29, 2015

COLORADO SPRINGS, Colo.— Mitigation work is underway near Austin Bluffs Parkway to address significant erosion of a nearby stream bed and protect one of the city’s major east-west corridors from future damage from significant rainfall. The project is an extension of the Austin Bluffs Corridor Project, but will not impact traffic.

The project is designed to protect critical infrastructure and natural resources by providing sustainable channel improvements to protect the roadway from future flooding and damage, protect utilities in the area and to stabilize and protect channel slopes adjacent to residential and commercial properties.

The existing Greencrest Channel stream bed has eroded significantly causing channel slope failure near Austin Bluffs Parkway and must be stabilized to protect the roadway and nearby structures. Several drop structures will be built along the Greencrest Channel to slow the flow of water while maintaining a sustainable riparian habitat and improve water quality downstream.

Emergency slope repairs were completed by the Streets Division in 2010 to address excessive erosion and channel bottom degradation following significant rainfall, but more extensive work was required. The City of Colorado Springs later applied for a Federal Emergency Management Agency (FEMA) grant in 2012 to provide more permanent channel stabilization and protect critical infrastructure and property. The Pikes Peak Rural Transportation Authority (PPRTA) agreed to provide the local matching funds for the grant.

The project, which is a cooperative effort among the City of Colorado Springs and area property owners, costs $3.87 million. The FEMA mitigation grant will fund $2.87 million with a local $1 million match funded by the PPRTA. Construction began on the project in early December and is expected to continue through July 2015.

The Greencrest Channel is centrally located within Colorado Springs.  It is located east of Union Blvd., south of Austin Bluffs Parkway, west of American Drive, north of the Greencrest Subdivision, and east of Palmer Park.