Yuma Mesa Irrigation & Drainage District, Yuma, Arizona – Avenue 3E in Yuma was being widened and the irrigation line needed to be lengthened in order to accommodate the new roadway width. The largest project challenge consisted of working in an active irrigation channel during a two-week dry-up period.
Once the water supply was turned off, DBA was contracted for the:
- Placement of isolation berms in the channel to separate the work area
- Pumping out the construction zone
- Demolishing the existing concrete-lined ditch
- Placement of new 48” concrete conveyance pipe
- Construction of all new concrete tie-in structures
DBA’s scope of work included:
- Removal of debris from the existing canal and removal of miscellaneous structures
- Removal of the B 3.7W check structure; the turnout structure; the outlet headwall; 16 LF of 48” RGRCP piping; 40 LF of 30” RGRCP piping; a concrete bowl; and over 187 SY of concrete lining
- Installation of a double 48” concrete collar
- Installation of a 144 LF-48” Class V, O-Ring RGRCP
- Construction of a new outlet headwall, new outlet lining transition, a precast check structure, the check inlet transition and check outlet transition
The project required minor earthwork, the addtion of a new 4” base course for the District’s O&M road, placement of a concrete sidewalk at the structure and concrete stairs, as well as steel handrails and the check structure metal walkway. Traffic control was required to maintain access over Avenue 3E for the duration of the project. The project is adjacent to Marine Corps Air Station-Yuma.