Marston Reservoir
Another award winning project. Work on the outlet channel from Marston Reservoir returned a decrepit and forgotten strip of land adjacent to Highway 285 into a pristine park setting used by many nearby residents and business people. Channel stabilization incorporated cut stone facades and spill weirs as focal points for the passing trail users. These structures also created stair step ponds down the slope of the park site which has encouraged native vegetation and wildlife to thrive.

Horseshoe Park Construction
Construction progress on an innovative level spreader stormwater outlet. The discharge weir is incorporated into the concrete trail through Horseshoe Park in Aurora, Colorado. This solution has irrigated park grasses and mitigated stormwater runoff since the early 1990s.

Big Dry Creek Park
A classic example of ICON's integrated civil design services is Big Dry Creek park where stormwater management, roadway design, and coordination with landscape architects and other specialists results in a fun and functional recreation amenity for the community.

Cherry Creek
As much as flooding on Cherry Creek marks Denver's past, the recreational value of the trail corridor is a magnificent part of the present and future of the Metro Area. Districts and municipalities from Denver to Douglas County have trusted ICON to plan, design, and manage important stormwater infrastructure, channel stabilization, and trail crossings along this unique treasure of Colorado's Front Range.

Level Spreaders
A unique feature of several ICON projects has been the level spreader stormwater outlet structure. As an alternative to a flared end section or run-down, the level spreader distributes storm sewer flows across a weir to reduce velocities. Typical installations result in a great advantage to downstream vegetation and significant water quality advantages. Proper siting is essential to the function of the level spreader to ensure proper vertical alignment, adequate run-on area, and sufficient access for maintenance and sediment removal.

Piney Creek
ICON is proud of many miles of stream and bank stabilization along Piney Creek from the confluence with Cherry Creek upstream to the Douglas County headwaters. In the past, this ephemeral sandy bottom creek wound through the eastern plains of the metro area with short weedy banks. Crossing the nearly desolate channel was as easy for wildlife and early underground utilities. So when the developed runoff led to a base flow condition in the creek, erosion and scour pulled the channel invert down and collapsed the grassy banks into sheer soil cuts. Bank to bank check structures and soil riprap bank stabilization has harnessed the power of the urban base flow to energize wetland growth and stabilize the channel into a recreational corridor for the new suburban residents and a new habitat for many native species.

Hwy 40 Bridge
Riverine Hydraulic Modeling is a little known art of the civil engineering community. ICON’s vast experience in modeling flood sources for FEMA, State, and Community clients ensures the most efficient and accurate results.

Utility Coordination
Modern underground utility construction demands planning and coordination. Dry or wet, shallow or deep, bored or excavated, member or non-member – utilities are a part of every design. Coordination, relocation, protection, and other site specific solutions are important to successful completion of any infrastructure installation.

Wetlands Trasition, Environmental Coordination
ICON partners with several expert environmental consultants to ensure any project complies with applicable regulations, but just as importantly, encourages a solution to the benefit of the natural environment and our client’s objectives.

Willow Creek Sights and Sounds
ICON designs stand out from our competition by sight and sound. Whenever possible, the unique characteristics of the project site are maximized to disguise the hardened infrastructure or other non-natural components of a project.

St. Vrain Bridge
Riverine Hydraulic Modeling: Hydraulic modeling is a little known art of the civil engineering community. ICON’s vast experience in modeling flood sources for FEMA, State, and Community clients ensures the most efficient and accurate results.

Piney Creek Hidden Infrastructure
An interstate natural gas line, sanitary sewer collector, potable and re-use water lines, and several storm sewer outfalls are buried within this project reach. ICON’s stream stabilization and trail corridor design built around these man-made features to protect their function, preserve their alignment, and disguise their impact.

Howes Street Outfall, Ft. Collins, Colorado
Approximately 2,600 LF of storm sewer outfall constructed through downtown Ft. Collins. The conduit ranged from a single 6x3 box to a double 10x4 cast-in-place reinforced concrete box culvert. Storm flows enter the system through banks of street inlets recessed from the street flow line to improve bicycle safety. Storm flows are treated in a series of water quality features prior to entering the Cache La Poudre River.

Jewell Wetlands, Aurora, Colorado
This award winning project is a great example of a multi-objective project: channel stabilization, detention, wetland mitigation, and all built into a park setting across a previously disenchanted urban parcel. Vertical sheet pile check structures stabilized the channel slope and provide cascading water for trail users and birds alike. The detention pond met the State Engineer’s jurisdictional dam requirements and blends in and around the majestic cottonwood trees. Channel design and tributary flows contribute to the thriving wetlands. A wooden boardwalk with sitting areas overlooks these lush amenities of the park while a concrete trail moves people through the park.

Jewell Wetlands, Aurora, Colorado

Jewell Wetlands, Aurora, Colorado