Phase WC-1 Tierrecita Vallejo Currently In Construction

-- UPDATE --

December 30, 2021

Construction on another phase of the Mouse River Enhanced Flood Protection Project began in August 2021 in the Tierracita Vallejo neighborhood, immediately west of Minot. WC-1A will construct earthen levees from Ward County Road 15 south through the neighborhood, and up to the existing abandoned oxbow. A seepage collection trench, storm sewer piping, and gatewell structure are also included in this phase to control interior drainage.

The Contractor, Wagner Construction, completed clearing and grubbing and removal of the existing levee in August. Levee placement began in September and is approximately two-thirds complete. Seepage collection piping and filter aggregate for the seepage collection trench is approximately two-thirds complete as well.

Excavation for the gatewell structure along with intake and outfall piping are scheduled to be constructed during the winter months. Rip rap placement along wet side of the levee is also anticipated to occur over the winter.

WC-1B, the second and final construction contract for this phase was bid in late December. Wagner Construction was the apparent low bidder and will likely began work in early 2022. WC-1B main features are earthen levee along with a rock riffle which will replace the existing dam structure located on the Mouse River.

Phase WC-1 Tierrecita Vallejo

urban flood control

Tierrecita Vallejo is a rural residential subdivision located near the northwest corner of the US 83 bypass and Highway 2 intersection, directly west of Jack Hoeven Park.  Shortly after the flood of 1907, the USACE constructed a flood control project for the subdivision consisting of a levee, gate wells, and a portable pump.  Following the 2011 flood, the Tierrecita Vallejo neighborhood was included in the scope of the Preliminary Engineering Report (PER) with the recommendation for the reconstruction of the levees, a railroad crossing structure, and storm water lift station.  Ultimately, the proposed levee system will serve as the west tieback for the MREFPP Phase MI-2 project and provide an increased level of protection for the City of Minot.

Since the PER was developed, other projects are either under construction or have been constructed that will allow for modifications to the proposed PER recommendations that will both save construction time and cost.  The proposed levee will extend west from the new US 83 bridge and follow the north bank of the Mouse River, cross the Canadian Pacific Railroad and head north. The levee will feature a closure structure across the railroad allowing Canadian Pacific Railroad continued operation while still protecting the Tierrecita Vallejo residents.  Work completed as a part of the Phase MI-2 project will allow the design team to modify the preliminary design by removing the ponding area, eliminating the proposed storm water lift station, and modifying the existing gate wells to maintain water levels within the existing cutoff meander.

Design has been completed on this phase of the project. The initial field work consisting of soil borings, topographic survey, and wetland delineation have been completed. Preconsolidation piles have been set.  The project is expected start construction in 2020. 

 

Phase WC-1 Tierrecita Vallejo Features.j

Phase WC-1 -  Tierrecita Vallejo 60% Design

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