4 Mile Low Water Crossing
US Army Corps of Engineers
Fort Sill, Oklahoma

“Experienced professionals to keep your projects on time while meeting all mandated standards.”

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Design-Build

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Structural Design

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Hydraulic Analysis and Modeling

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Environmental Permitting

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Government Agency Coordination

MAC was the Designer-of-Record on the Design-Build Team led by Diversified Construction for the 4-Mile Low Water Crossing over Medicine Creek at Fort Sill Army installation in Comanche County, Oklahoma.

In May 2015, a soldier lost his life when he was swept off the previous crossing, which sat two feet above the creek. The new crossing provides a safe route over the creek that can remain open during storms, guaranteeing Fort Sill training exercises are not impacted.

The project consisted of removal and replacement of the existing low-water crossing and culverts with a five cell 14’x20’ reinforced concrete box structure with wingwalls, headwalls and aprons supporting a 30-foot clear span driving surface. The upstream incorporated a weir structure with orifices at an equal size and elevation to the existing corrugated metal pipes to ensure the upstream wetlands were maintained. Design also included new concrete roadway to tie crossing to the existing road.

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