Manning Crevice Bridge Replacement

Manning CreviceCM/GC project to replace a 300’+ span double tower cable-stayed, suspension, vehicular bridge over the Salmon river with a single tower cable-stayed, suspension bridge.


  • Cost: $9,640,000
  • Owner: WFHL
  • Designer: Atkins
  • Construction Period: 06/14 - 05/18

Teton County Transfer Station

Reconstruct the Transfer Station, generally consisting of over 10,000CY of mass excavation, structural fill, and 4,500CY of structural concrete using site batched ready-mix concrete, install 18,000SF metal building, metal bypass canopy and roll up doors, truck weigh scales, site piping, mechanical, electrical, fire protection, landscaping, paving and site work.

  • Cost: $5,860,891
  • Owner: Teton County, WY
  • Designer: Gordon Enviromental
  • Construction Period: 04/2018 - 06/2019

Opal Springs Hydroelectric Project & Fish Passage Improvements

Modify the existing Opal Springs Hydroelectric project. Construct new vertical slot fish ladder, modify the existing diversion crest to increase the pool impoundment elevation, install horizontal drains, pre-stressed ground anchors (to support fish ladder construction), mass excavation and install a temporary shoring wall along the river abutment. Install open standpipe piezometer, pneumatic crest gate and control building, compressors, piping, fiber optics, electrical, and tie in to the existing project control system, construct a spillway chute, and modify the existing powerhouse intake and left abutment.

This project opens up over 125 miles of habitat to anadromous fish in the Crooked River watershed, and is pivotal to the broader reintroduction of anadromous fish into the Upper Deschutes Basin upstream of Lake Billy Chinook and the Pelton Round-Butte Hydroelectric project.

  • Location: Madras, Oregon
  • Cost: $9,390,068
  • Owner: Deschutes Valley Water District
  • Designer: CH2MHill/Otak
  • Construction Period: 12/2017 - 12/2019

Silver Lake Flat Dam Rehabilitation

Silver Lake DamInstall new downstream drains, modify the dam crest, extend the top of the impervious blanket zone, furnish and install two outlet gates, and construct a new spillway and stilling basin.

  • Cost: $4,470,187
  • Owner: North Utah Water Conservancy District
  • Designer: Utah Division of Water Resources
  • Construction Period: 06/2015 - 05/2016

Donkey Creek Pump Station

Donkey CreekConstruct the Donkey Creek Pump Station including procurement and installation of canned vertical turbine pumps, surge suppression vessels, and connected piping.  The project includes site grading, earthwork, yard piping, mechanical, electrical, and instrumentation/controls work.

  • Cost: $7,387,417
  • Owner: City of Gillette
  • Designer: Burns-McDonnel
  • Construction Period: 04/2015 - 09/2016

Fall Creek Fish Facility

Construct a new adult fish collection facility, upgrade and tie in to the existing fish facility to comply with current environmental criteria, and provide a safe working environment for the end user. This effort includes a new concrete fish ladder, pre-sort structure, fish crowder, transport flumes, anesthetic tank, recovery tank, false weir, brail assembly, head box dewatering flume, post-sort structure, pre-engineered steel structure & independent mezzanine with lower access platform, installation of complex mechanical systems, tie in of large diameter carbon steel water supply and return piping, fish handling equipment, demolition and modification of the existing fish ladder, associated electrical installations, asphalt/concrete paving, and landscaping.

  • Cost: $14,336,488
  • Owner: USACE Portland District
  • Designer: USACE Portland District
  • Construction Period: 08/2016 - 07/2018

SH-3 St Joe River & St Maries RR Bridges

Replace existing bridges with new structures to meet current loading criteria, geometric standards, as well as pedestrian and ADA requirements. Work includes roadway reconstruction and shoulder widening at the north and south ends of the bridges, along with driveway and approach work, to provide proper tie-in and modifications to the Railroad Ave ramp.

  • Cost: $17,315,800
  • Owner: Idaho Transportation Department
  • Designer: J-U-B
  • Construction Period: 07/2017 - 06/2019

Capitol Mall Parking Garage

Concrete work for 5.5 level, 580 stall cast-in-place parking garage.


  • Cost: $3,430,000
  • Owner: City of Boise
  • Designer: Leatham-Krohn-Van Ocker Architects
  • Construction Period: 07/2013 – 01/2014

Blue Lakes Trout Hatchery Water Supply Pipeline Replacement

Construct new concrete water intake structure on Alpheus Creek and concrete discharge structure at the Blue Lakes Fish Farm, install 1840 foot (±) 60” HDPE pipeline (200 cfs), fittings, screens, safety devices and equipment, roads and civil site work.


  • Cost: $1,000,000
  • Owner: Blue Lakes Fish Farm
  • Designer: MWH Engineers
  • Construction Period: 04/2013 - 10/2013

Renwick Dam Rehabilitation Phase 2

Renwick Dam Oct 2014 (1)

Excavate downstream side of dam for footing of spillway retaining walls and drain system. Construct a 500′  spillway of air entrained roller compacted concrete (AERCC) with cast-in-place spillway retaining walls.


  • Cost: $7,380,000
  • Owner: Natural Resource Conservation Service (NRCS)
  • Designer: NRCS
  • Construction Period: 09/2012 – 08/2014