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Roadways & Infrastructure
The experienced staff at CVL has provided engineering design services for a wide range of major roadway and infrastructure projects. CVL’s staff has developed well respected relationships with such agencies as the Colorado Department of Transportation, Urban Drainage and Flood Control Office of the State Engineer, as well as City and County staff throughout the Metropolitan Front Range area.
CVL roadway designs have included major arterial roadways, minor arterial and collector roadways, local and minor roadways, major intersection improvements, as well as unique street design for urban redevelopment.
CVL has been involved in developing and expanding the complicated infrastructure grid in the Colorado Front Range area to serve an ever growing population. Our utility and drainage infrastructure involvement has included designs for the extension of major water distribution conduits, regional sanitary sewer collection outfall systems, and regional storm sewer systems. CVL’s designs for managing storm water are cutting edge. Regional detention systems, major water quality facilities, and channel and other conveyance systems across the Front Range bear the CVL brand. We have incorporated recent advancing technology in the areas of low impact development “LID” systems to enhance the quality of stormwater runoff, and provide truly sustainable development along the I-25 corridor.
We firmly believe that implementing the latest technology serves our clients’ best interests. CVL is committed to participating in, attending, and hosting seminars and other forums regarding ongoing advances in the technology for conveyance and treatment of storm water runoff, and more stringent environmental goals and regulations.
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104th Avenue & Colorado State
Highway 2
Commerce City, Colorado
The rapid growth experienced in the northeast portion of the Denver Metropolitan area necessitated the expansion of the transportation network, including 104th Avenue, and portions of Colorado State Highway 2. This roadway was redesigned to widen from a two lane rural roadway to major arterial status. CVL, working with the City of Commerce City, Colorado Department of Transportation, and a team of subconsultants, designed, entitled, and monitored construction of 1.5 miles of the project, along with major intersections and portions of Colorado State Highway 2. The Burlington Northern Railroad tracks parallel SH 2 and their close proximity to the intersection of Highway 2 and 104th created a design challenge to coordinate the signalization of the intersection. Additional challenges included the design of intersections with multiple turn lanes in all directions, design of drainage structures for crossing major tributaries to the Second Creek drainageway, and designs for crossing the O’Brian Canal. |
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Second Creek Drainageway
Turnberry
Commerce City, Colorado
The development of the Master Planned Community of Turnberry in Commerce City, Colorado necessitated designs of regional infrastructure to address major storm drainage problems that had plagued this area for some time. Master plans prepared for the area through the Urban Drainage and Flood Control District were the basis for designs of these regional facilities. Major drainageways tributary to Second Creek traversed the project, and afforded locations for design of regional detention facilities. Conveyance of this significant runoff dictated design and construction of substantial earthen channels and concrete box culvert crossings of several major roadways. Of particular note is the design and construction of several hundred feet of triple - 42-inch diameter steel pipe culverts, which were bored under the Burlington Northern Railroad and Colorado State Highway 2. This installation was necessitated by the restrictions to open cut trenching through the railroad and highway. |
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Scott Gulch Drainageway Improvements
Pradera
Douglas County
The Club at Pradera situated within the Pradera master planned community in Douglas County, encompasses much of the watershed area of Scott
Gulch, a major tributary to Cherry Creek. CVL designed, permitted, and monitored construction of the Urban Drainage and Flood Control District maintained regional storm water retention facility located on this drainageway. The facility also acts to provide embankment for the extension of Chambers Road through this portion of Douglas County. In addition to this 70 acre feet flood control reservoir, CVL designed channel stabilization measures for Scott Gulch, including large boulder drop structures, on and off line water quality enhancement facilities, and box culvert crossings of the interior roadways. |
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Infrastructure Extension - Traditions
Aurora, Colorado
Development of the Traditions master planned community near the eastern limits of the City of Aurora, Colorado required that the existing City of Aurora utility infrastructure system be extended to serve the development. CVL designed extensions of large diameter water transmission mains and sanitary sewer mains to accommodate the development of this area. CVL also addressed expansion of the transportation network including designs of major collector and arterial roadways and intersections, including East 6th Avenue Parkway, Harvest Mile Road and Alameda Avenue. The positioning of this development within the First Creek watershed in Aurora necessitated construction of an extended wetlands water quality and storm water detention facility within the project. CVL was successful in creating a design that addressed this requirement, while providing an attractive amenity for the residents of the community. Associated with this facility, was the design of a large double box culvert to convey the First Creek Tributary flows under East 6th Avenue. |
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Unique Solutions to Remote Development
Stroh Farm
Johnstown, Colorado
CVL has met the challenge of development of somewhat remote communities along the Front Range. An excellent example of this is infrastructure extension to serve Stroh Farm, a 730 home community in Johnstown, Colorado. This community is situated 3 miles south of Johnstown, and is separated from the community by the Little Thompson River. In addition to design of three miles of collector to connect the development to the town, CVL engineers designed a rather unique gravity force main to convey the sanitary sewer under the river and on to the Town, without the need for lift station pumps. This inverted siphon is outfitted with an inline facility for insertion of a cleaning swab or “pig”, which can be flushed through the facility for cleaning. CVL prepared specifications and design for an underground water supply boost pump station, to provide both domestic and fire flows to the project in excess of 2000 GPM at adequate pressures. Structural isolation designs for suspension of both the water and sanitary sewer mains under the bridge crossing of the Little Thompson River were accomplished, along with a design for boring these mains under an existing railroad.
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Sampson Gulch Regional Drainageway
Improvements
Aurora, Colorado
CVL, along with a team of subconsultants, prepared designs for the Sampson Gulch Regional Stormwater Detention Facility and Associated Drainageway Improvements, in accordance with the Urban Drainage and Flood Control District’s master drainage plan for this portion of the City of Aurora. The design of this facility included mapping of the 100 year floodplain and processing a CLOMR and LOMR (Federal Emergency Management Agency - Letter of Map Revision), coordination of a 404 permit from the Corps of Engineers, design of major box culvert crossings, channel drop structures, channel stabilization measures, and extensive erosion control measures for development within this watershed.
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Federal Emergency Management
Agency - CLOMR’s and LOMR’s
Broomfield, Colorado
CVL prepared and processed several Letters of Map Revision through the Federal Emergency Management Agency, for modifications to floodplain mapping in the Front Range metropolitan area. An example of this is two separate drainages within the Red Leaf subdivision in the City and County of Broomfield. CVL, on behalf of the City and County of Broomfield, prepared and processed these LOMR’s through Urban Drainage and Flood Control, and the Federal Emergency Management Agency, to effectively remove substantial areas of development from the 100 year floodplain of major drainageways. Included within this design and report mapping, were designs and construction coordination for a major crossing of Lowell Boulevard, consisting of four 42-inch diameter CMP culverts, and massive headwall structures. Unique features of this installation are the setting of two of the pipes at a higher elevation to accommodate varying stages of flows within the drainageway, and eliminate conflicts with many existing utilities within Lowell Boulevard.
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