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Design and Construction Program Notes

by
David W. Lloyd, P.E., Chief, Design and Construction Program

Status of District Design Projects
Project Participating Jurisdiction(s) Status
Grange Hall Creek Northglenn Complete
Lakewood Gulch - Perry St. Denver Complete
Drainageway E Columbine Valley Complete
Irondale 80th Ave. Outfall Adams County, Commerce City Complete
Littles Creek Arapahoe County Complete
Goose Creek Phase 3 Boulder Complete
Pleasant View Trib. to Lena Jefferson County Complete
Rangeview Gulch Littleton Complete
Greenwood Gulch @ Monaco Way Arapahoe County Complete
Monaco Park Outfall Commerce City Complete
Westerly Cr. @ Expo Park Aurora Complete
Valley Club Acres Arapahoe County, Aurora Complete
Shaw Heights Tributary Westminster 90% Complete
Niver Creek Tributary L Thornton 90% Complete
McKay Outfall Adams County 50% Complete
Cottonwood Creek Arapahoe County 40% Complete
Lena Trib. H Jefferson County 95% Complete
Pinehurst & Academy Park Tribs. Denver 5% Complete
Cherry Creek Drop Structures Glendale 95% Complete
Clear Creek @ Kipling Wheat Ridge 95% Complete
Drainageway G Jefferson County 50% Complete
North Tributary of Massey Draw Jefferson County 50% Complete
Lakewood Gulch @ Welchester Park Jefferson County 50% Complete
Piney Creek Arapahoe County 25% Complete

The year 1999 was another busy year for the District’s Design and Construction Program, one which saw us committing over $9 million to design and construction projects by year end. Most of this funding has gone toward construction as well as initiation of several new design projects. Design and Construction currently has in excess of 80 active projects in varying stages from design through construction.

The Willow Creek project, in cooperation with Arapahoe County and the District’s Maintenance Program, was completed this past year and has served as an example for alternative and innovative ways to provide streambank protection as well as water quality enhancement. In September, the project received the 1999 Grand Award for Engineering Excellence from the Colorado Association of Stormwater and Floodplain Managers at their annual conference in Steamboat Springs.

Marston Lake North Drainageway between Kenyon and Bear Creek was completed by late 1999, and has been another innovative project in solving a serious flooding problem within Fort Logan National Cemetery as well as a streambank stabilization problem between Kenyon and Bear Creek within Denver’s Bear Creek Park. A new overflow drainage structure was installed across Kenyon extending to Bear Creek in a closed conduit. Low flows continue through the existing culvert and meander down the 40-foot vertical slope to Bear Creek passing through a series of ponds and drops creating a water feature which blends in well with the park environment. This was a cooperative project with the City and County of Denver.

Kalcevic Gulch was another project completed in 1999 in cooperation with Adams County. Kalcevic Gulch between the Lower Clear Creek Canal and 70th Avenue had long been a source of flooding problems and steam bank instability. The failure of 68th Avenue due to overtopping floodwaters in the mid-nineties prompted Adams County to move this project forward with the District’s assistance. The project now provides 100-year flood protection through this reach of the gulch.

STATUS OF DISTRICT CONSTRUCTION PROJECTS
Project Jurisdiction(s)

Cost

Status
Longs Way Tributary Parker, Douglas Co.

$350,000

Complete
I-25/46th & Pecos Ph. IV and V Denver

600,000

Complete
Brighton North Outfall Brighton

1,000,000

Complete
Parker/Mexico Outfall Arapahoe County

800,000

Complete
West Evans Ph. III Denver

500,000

Complete
Lakewood Gulch – 10th Ave. Denver

700,000

Complete
20th & Meade Outfall Denver

800,000

Complete
Willow Creek Arapahoe County

550,000

Complete
Bear Canyon Creek Boulder

700,000

Complete
Clinton Street Outfall Arapahoe County

100,000

Complete
Grange Hall Creek Phase I Northglenn

850,000

Complete
46th and Pecos Outfall Denver

600,000

Complete
Lakewood Gulch @ 10th Ave. Denver

950,000

Complete
Little Dry Creek Phase C Westminster

650,000

Complete
20th and Meade Outfall Denver

800,000

Complete
Willow Creek Arapahoe County

583,000

Complete
West Evans Denver

500,000

Complete
Lincoln Ave. @ Newlin & Cherry Parker

500,000

Complete
Longs Way Tributary Parker, Douglas Co.

425,000

Complete
Marston Lake North Denver

950,000

Complete
University/Mexico Outfall Denver

500,000

Complete
Niver Creek Trib. M Federal Heights

200,000

95% Complete
Cherry Street Bridge Glendale

1,500,000

95% Complete
Clear Creek @ Ford Street Golden

1,500,000

80% Complete
Drainageway E Columbine Valley

1,088,000

80% Complete
Westerly Creek @ Expo Park Aurora

3,400,000

5% Complete
Granby/Sable Outfall Aurora

160,000

95% Complete
Greenwood Gulch @ Monaco Way Arapahoe County

450,000

30% Complete
Irondale Gulch 80th Ave. Outfall Adams County

800,000

10% Complete
Littles Creek Phase II Littleton

950,000

50% Complete
Massey Draw @ Carr Street Jefferson County

775,000

95% Complete
West Dad Clark Gulch Douglas Co.

450,000

50% Complete

We also completed the last phase of improvements to Little Dry Creek in the City of Westminster. The last reach constructed this year extended from Lowell Boulevard upstream to England Park near 72nd Avenue, and consisted of open channel improvements and grade control structures. The City of Westminster celebrated the completion of this multi-phased project through a dedication ceremony held on October 21. Mayor Nancy Heil (also a newly appointed UDFCD Board Member) officiated at the dedication and recognized several individuals from the City, District, Sellards & Grigg Consulting Engineers and contractors who had worked on the project since it’s inception in the late seventies.

Another unique project, which saw completion of it’s first phase of construction in 1999, was Grange Hall Creek in the City of Northglenn. This multi-phase project calls for stream bank stabilization and grade control along the main stem of Grange Hall Creek and its North Tributary from their crossings at the Union Pacific Railroad eastward to the Northglenn city boundary. Early in the design process, it was decided that we wanted to utilize a type of drop structure which would blend in more with the surrounding land forms. It was decided that a concrete drop utilizing colored concrete and free formed to give the appearance of a natural rock outcrop in the stream bottom would best serve this purpose. We recognized that most contractors would not have any experience in the construction of this type of faux rock drop and as a result we had Colorado Hardscapes construct a referee sample at the project site for contractors to view during the bidding process. Plans are to bid the second phase of construction early in 2000.

The year 2000 looks to be no less busy than 1999 with additional funding identified in the 5-Year Capital Improvement Program for 40 new or on-going projects.

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