Drainage

Tonto National Forest Scour Protection & Boat Ramp Repairs: Prime contractor  The concrete turn around area suffered scouring on the side impacted by the wash and the boat ramp was inaccessible. SWP was contracted to core into the existing concrete ramp and fill voids underneath with a flowable slurry concrete fill. Gabion baskets with rock fill […]

NPS, Cottonwood Cove armoring flood diversion channel (gabion baskets) design-build.

Lee’s Ferry Road: Prime Contractor  The USDOT, Central Federal Lands Highway Division of the Federal Highway Administration contracted with SWP to perform scour protection and spot repairs caused by a storm event greater than a 100-year event within the Glen Canyon National Recreation Area. Improvements included: Curb and gutter reconstruction Drainage Scour protection Countermeasures Drainage

HX Detention Dam Maintenance Bureau of Land ManagementBowie, AZ HX Detention Dam suddenly breached sometime in the summer of 2014 which presents hazards to those who use the crest as a road. The contract involves making geotechnical investigations of the current condition of the breached embankment specifically as to the extent of damage from which excavation

FHWA, Eldorado Canyon Road Storm Repairs Record rain fall to Arizona and Nevada caused the road (NV165) leading to Nelsons Landing on the Colorado River (15 Miles below Hover Dam) to be severely damaged.  The USDOT, Central Federal Lands Highway Division of the Federal Highway Administration contracted with SWP to perform emergency repairs to 3

DHS & CBP, Emergency Temporary Hill Stabilization  The hillside surrounding the Oroville Border Patrol Station is unstable where a natural spring has an outflow and has already experienced a slide. This water needs to be diverted so that it does not produce additional degradation of the surface or sub-surface soils threatening the integrity of the

Ford Arizona Proving Grounds Storm Damage Repair & Drainage Construction: Subcontractor  SWP was brought in the initially to repair storm damage caused by the extreme rainfall Install drainage culverts and catch basin, & provide safety enhancements Subsequent investigation by Ford personnel SWP found additional storm damage under a critical testing surface. An additional Job Order was

Ash Canyon Crossing: Prime Contractor  $460,150 The USDOT, Central Federal Lands Highway Division of the Federal Highway Administration contracted with SWP to perform drainage repairs and improvements to a particular area that had 4 pipe culverts underneath the roadway which would frequently over top during large storm events and cause further erosion. SWP built a