The firm provides a complement of planning and design services, from conceptual and preliminary design through final design, construction plans, specifications and estimates, contract administration, bidding services, construction coordination and observation services, and close-out.

Animas River Trail:

South Durango Pedestrian Bridge and Trail Design-Build


Muller Engineering was the lead design consultant on the design-build team for this segment of the Animas River Trail in Durango. The project included the design and construction of approximately 1,400 feet of 10í wide concrete trail, railing, earthwork, drainage, slope stabilization, rockery and MSE retaining walls, a river-userís takeout area and trail lighting. The signature project element is a 250-foot, three-span (40í, 170í, 40í) manufactured bow-truss trail bridge over the Animas River. Great care was taken to thread the bridge between large desirable trees on the riverbank and place the bridge in a manner that would not cause a rise in the water surface elevation. A 16-inch waterline and 2-inch fiber optic conduit are hidden from view within the truss elements beneath the trail deck. The pedestrian bridge crosses just upstream of the CDOT Bridge carrying US 160/150 over the Animas River, and portions of the trail lie on CDOT right-of-way beneath the US 160/550 bridge. The trail traverses the 80 foot high, 1.5:1 (H:V) US 160/550 bridge embankment, classified as marginally stable by geotechnical analysis. Muller developed a win-win trail concept for this area that reduced construction cost and buttressed the slope while providing the necessary trail bench without encroaching on the river. The CDOT license agreement for the trail required that all work (including the bridge) be approved by CDOT and be in strict conformance with CDOTís standards, specifications, and bridge design manual.

Mullerís services included performing a hydraulic analysis of the Animas River for both the bridge crossing and trail, trail design, river-userís takeout area design, bridge substructure design, waterline design, providing documents and design work to support acquisition of an individual 404 permit, and construction support services.


Animas River Bridge Animas River Bridge

Animas River Trail Animas River Trail

Animas River Bridge Fit Animas River Bridge Fit


Belleview Avenue Widening & Rehabilitation, Quincy to Kipling Street


The project is reconstruction of 2.5-mile of a minor urban arterial highway in two phases involving roadway, traffic, drainage and utility improvements. Under Mullerís on-call contract with Jefferson County, we prepared conceptual, preliminary and final plans for roadway reconstruction for this project. The project consisted of widening Belleview from two lanes to a four-lane minor arterial roadway section with sidewalks along both sides of the roadway. Services included roadway and traffic engineering, signal design, striping, construction traffic control plans, public involvement, environmental clearances, right-of-way legal descriptions and exhibits, landscaping and drainage design. Extensive utility coordination has been involved to include extensions of water lines for Denver Water and Willowbrook Water and Sanitation District. Widening of Belleview impacted the West Belleview Pump Station and Reservoir requiring water line adjustments and right-of-way takes from Denver Water Department. Also, overhead Xcel Energy power lines are being relocated underground.



W. Belleview Ave. at S. Simms St. W. Belleview Ave. at S. Simms St.

Belleview Roundabout Belleview Roundabout

Quincy Avenue Quincy Avenue


C-470 and Alameda Parkway Interchange


Muller provided roadway, intersection, drainage, and water quality design for a new interchange at C-470 and Alameda Parkway. The project was completed on a fast-track schedule with work started in September 2006 and completed for ad on September 27, 2007. This included an update of an EA, preliminary and final design, and right-of-way plans and acquisition.

The Muller team contributed innovative ideas to allow quick acquisition of an easement from Xcel Energy and right-of-way from Robinson Brick, shortening the project duration by one year, and allowing completion of the interchange for the summer 2008 Parade of Homes.



C-470 and Alameda Parkway Interchange C-470 and Alameda Parkway Interchange

C-470 and Alameda Parkway C-470 and Alameda Parkway

Retaining Wall/Bike Path Retaining Wall/Bike Path


Green Ridge Glade Dam Road (Larimer County Road 29) Relocation


As a subconsultant to the designer of the Green Ridge Glade Dam, Muller prepared plans, specifications and estimates for approximately 3 miles of relocated Larimer County Road 29 resulting from the raising of the existing Green Ridge Glade Dam. Muller employed some innovative design approaches to construct the road in a scenic valley to avoid visual impacts to residential areas and to the traveling public. Exacting care was taken with the profile grade lines to minimize the scarring of hillsides and rock cuts to maintain the pristine environment around the Green Ridge Glade Reservoir. To eliminate large, expensive and unsightly roadway fills to gain elevation to the top of the dam, the roadway was incorporated into the face of the new dam embankment. Work included roadway design, drainage design, construction traffic control, public involvement and agency coordination. Muller supported the prime consultant during construction.


Green Ridge Glade Dam Aerial Green Ridge Glade Dam Aerial

Green Ridge Glade Dam Road Green Ridge Glade Dam Road

Green Ridge Glade Dam Green Ridge Glade Dam


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