CAREERS

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EXPERIENCE.
INNOVATION.
EXECUTION.

Providing integrated geo-structural engineering and construction services to some of the industry’s most challenging projects.

SERVICES

Rooted in our everyday training and operations to ensure safe, successful results.

We offer contract engineering and drilling services to logistically challenging geotechnical projects.

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Get in touch with our experienced estimating team to learn how we can add value to your project.

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Projects around the world

Click on the dots on the map to explore our projects
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Performed work in more than 35 U.S. States and 7 Canadian Provinces
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Collaborated with more than 30 major utilities across North America
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Consistently contributing to industry advancement with several patents
DESIGN-BUILD
SUBSURFACE CONSTRUCTION
ENGINEERING SERVICES
PROGRAM MANAGEMENT
GEOTECHNICAL EXPLORATION

Innovation Driving Results.

Our team prides itself on continuously revising and refining our equipment and processes, not only to meet the individual needs of every project we work on, but also in anticipation of future needs that might arise and challenges that will need to be solved.

ABOUT

Extensive Experience

ranging from high-altitude to underground, desert heat to extreme cold, marine to mountainous, and everything in between

150 Pieces

of major equipment, custom-built or modified in-house

In-House Expertise

supporting engineering, data logging, digital mapping, geotechnical, geological and fabrication services

ABOUT

Markets we serve

Crux’s expertise extends into a wide variety of market sectors, allowing us to rapidly expand our knowledge base and experience.

MARKETS

ELECTRIC POWER DELIVERY

POWER GENERATION/STORAGE

TUNNEL

PIPELINE

DAM

TRANSPORTATION

COMMERCIAL

MARKETS

CASE STUDIES

ALL PROJECTS

CASE STUDIES

ALL PROJECTS

Providing Services to Some of the Most Challenging Infrastructure Projects.

Our multidisciplinary team delivers fully integrated project solutions through the use of innovative techniques and equipment.

SAFETY IS OUR CORE VALUE

Rooted in our everyday training and operations to ensure safe, successful results.

INNOVATION

Continuously contributing to industry advancement through improved equipment and processes.

SUSTAINABILITY

Enabling the development of critical infrastructure with minimally invasive construction methods.

Publications

All Articles & Papers

ARTICLES & PAPERS

  • Answering the Call

    Published On: January 26, 2023

    Crux Subsurface Inc. rebuilt foundations for the historic Bonneville-Hood River Transmission Line through rugged terrain By Susan Bloom | Dec 15, 2022 Built between 1939 and 1941 as part of Franklin D. [...]

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  • Changing the Game with Effective Quality Management

    Published On: May 1, 2022

    How Processes and Accountability Translate to Performance Published By: Foundation Drilling Magazine | May/June 2022 In an initiative to increase the reliability of their electric system serving roughly 11 million Florida residents, [...]

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  • Women in Construction

    Published On: March 12, 2022

    Strength in Diversity By Sydney McNeal, Crux Subsurface As an increasing number of companies and industries roll out diversity initiatives and the topic becomes more widely studied, we continue to see the [...]

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Contact Us

Phone 509-892-9409
Fax 509-892-9408
Email [email protected]

Headquarters
4308 N Barker Rd
Spokane Valley, WA 99027

FOLLOW ON INSTAGRAM
@cruxsubsurface

CONTACT US

Phone 509-892-9409

Fax 509-892-9408

Email [email protected]

HEADQUARTERS

4308 N Barker Rd
Spokane Valley, WA 99027

ABOUT US

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© Copyright 2023 | Website by Contrast | All Rights Reserved

Antimony to Burke Transmission Line

115 kV transmission line rebuild involving design-build micropile foundations for twelve tubular steel pole structures and three H-frame structures. Structures were located on moderately to extremely steep slopes and required helicopter-supported construction.

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Argonne Bridge Replacement

Pre-construction exploration services, including drilling 2 borings upstream of the existing structure near each pier.

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Bad Rock Barge Drilling

Land and overwater drilling to investigate the option of widening a dangerous stretch of road. Challenges included working in fast, spring runoff water, with in excess of 5 feet per minute.

Barker Solar Field

Geotechnical investigation drilling in advance of solar panel installation.

Batiquitos Lagoon

Overwater borings to support future railway design, with challenges including brackish water and caving borehole conditions.

Big Chino Pump Storage

Geotechnical drilling and sampling services for one 950-foot boring steep terrain and culturally protected areas. In-situ testing included downhole imaging, packer testing, hydro fracturing and hydro jacking.

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Blue Lake Hydroelectric Expansion

Geotechnical drilling and sampling services to aid in the design phase of the proposed hydroelectric expansion project. This included drilling fifteen boreholes and a total of more than 1800 feet.

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Blue Lake Hydroelectric Expansion Phase 2

Crux’s scope of work included a foundation grouting program, rock anchor installation and micropile installation. Consolidation grouting was completed, followed by curtain grouting in the left and right dam abutments to reduce the permeability of rock formations. All grouting activities required access utilizing a 400-ton crane, adding to the challenges at this remote dam site.

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Bonneville to Hood River Transmission Line

Micropile foundation design and construction for replacement structures located in extremely steep, rocky terrain. Challenges included the alignment traversing challenging geotechnical conditions featuring talus slopes, and very little data available prior to construction.

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BNSF Slope Stabilization

Procurement and construction services to install a permanent top-down soil nail/shotcrete shoring system to stabilize an active landslide. The shoring system required 150 epoxy-coated soil nails and 5,000 square feet of permanent reinforced shotcrete facing.

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Cabot Crossing-Montague Substation

100% design-build services for four micropile foundations within the Cabot Substation. Lattice tower structures were replaced with new double-circuit monopoles the relocate the 115 kV circuits.

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Cedar Falls Dam

Multiple phases of work including a downhole imaging data acquisition program, and horizontal coring through the existing concrete dam with tight tolerance specifications.

Central Pool Augmentation

Construction of a new water treatment plant to provide for growth in surrounding counties. Geotechnical work consisted of drilling two deep core holes to provide information regarding rock mass and groundwater conditions along the proposed tunnel alignment.

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Central Subway Cross Passage

Complex geotechnical conditions and ground water prevented the use of traditional excavation methods, and Crux was contracted to provide drilling services for a ground freezing approach. Crux installed 80, 3.5-inch diameter freeze pipes that extend 25 to 30 feet from within the 18-foot diameter tunnel.

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Cerritos Channel Relocation Project

Drilled shaft and driven pile design for replacement structures on either side of the Cerritos Channel in the Port of Long Beach, CA. Challenges included designing for lateral spread displacement for a tall, heavily loaded four-legged structure.

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Cricket Valley Transmission Line

Shallow hard rock at several planned structure locations necessitated a deep foundation alternative to drilled shafts, and Crux provided concrete cap micropile foundation design-build services for 3 H-Frame structures and 52 monopoles.

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Dalles Dam Fish Guidance System

Overwater geotechnical drilling and sampling services, including drilling 15 borings to depths of between 15 and 100 feet.

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Deer Creek Barge Drilling

Drilling and sampling 13 vertical overwater borings for a proposed intake tower. Borings were accessed by barge, with water depths ranging from 25 to 135 feet, and geophysical testing and water pressure testing were completed at select locations.

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Deli Landslide Geotechnical

Crux provided geotechnical drilling services as part of an emergency response by Caltrans. Borings were accessed by track rig; instrumentation included TDR cables, inclinometers and standpipe piezometers.

Denali Park Landslide Mitigation

Landslide mitigation along steep slopes unsuitable for conventional drilling equipment. Crux built custom work platforms and utilized equipment capable of setting up on tundra slopes without excavation.

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Devers to Palo Verde No. 2

Two new 500 kV transmission lines built within existing corridors. Crux was contracted to provide design-build micropile foundation services for 32 lattice tower structures in mountainous terrain and National Forest Land.

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Devils Slide Twin Tunnels

Two new 500 kV transmission lines built within existing corridors. Crux was contracted to provide design-build micropile foundation services for 32 lattice tower structures in mountainous terrain and National Forest Land.

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Eastgate Conveyance System Expansion

Core drilling and sampling at nine borehole locations in close proximity to residential homes. Subsurface conditions proved challenging, consisting of glacial outwash deposits, glacial tills, and highly fractured siltstones and sandstones.

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East Valley Lateral

Crux provided horizontal core drilling and permeation grouting for the 1,500 foot long, deep tunnel crossing alignment of the Las Vegas Wash.

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Ebey Slough Transmission Line

Replacement of 80 deteriorating wood poles with 15 steel poles through the wetland habitat. Crux used marsh buggies and buoyant tracked pontoon carriers to install 132 total micropiles to support challenging access structures.

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Eldorado-Ivanpah Transmission Line

Upgrading an existing 115 kV line to 220 kV. Crux provided turnkey micropile foundation services for a portion of the 36-mile alignment utiilizing a combination of medium-lift helicopters and Morooka rubber track carriers.

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Eldorado Line Swap

Swapping transmission line positions between two 500 kV transmission lines. Crux designed and constructed concrete cap micropile foundations at three of the four structures, where difficult access and shallow hard rock necessitated a foundation alternative to drilled shafts.

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Ferguson Slide

Various phases of work over multiple years, including difficult access geotechnical drilling at the top of the active slide, as well as exploration services to support the design of an earth stabilization system when the slide blocked the primary access road to Yosemite National Park. Access included track mounted drills and helicopter, and instrumentation was completed at the request of the client.

Gila-Welton Mohawk Transmission Line

Upgrading 2.8 miles of aging infrastructure on steep slopes and other access challenges. Crux designed steel cap micropile foundations for these 8 structures, installing a total of 44 micropiles using helicopter support.

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Gateway Building Underpinning

The foundation of a single-story commercial building was in need of repair due to differential settlement issues. Crux provided 100% design-build services for micropile installation as a means of settlement mitigation.

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Gordon Butte Pump Storage

Geotechnical drilling and sampling in steep rocky terrain for a proposed pump storage project. Borings were accessed by custom track equipment, and downhole imaging and packer testing were completed.

Gorge Dam Power Tunnel

Exploratory drilling along the proposed tunnel alignment, which included deep vertical, angle, and horizontal borings in highly fractured bedrock. Six boreholes were drilled to depths of up to 800 feet.

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Harborton Substation TL Foundations

Crux was contracted to install micropile foundations for a structure location with liquefiable soils near the Willamette River. After reviewing the available geotechnical information, lateral spread design requirements, and liquefiable soils, Crux provided multiple foundation solutions and associated risks of each type, ultimately determining that vibratory caissons would be the most cost and schedule effective.

High Speed Rail San Jose-Merced

Multiple phases of work for different clients, providing exploratory drilling for the feasibility of California’s proposed High Speed Rail project. Scopes included geotechnical drilling within a national forest, packer testing, groundwater sampling, hydraulic jacking, in-situ rock testing, pressure meter testing, and downhole imaging. Access to borings required helicopter support in multiple locations.

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Hoover Dam Bypass

Crux completed more than 10,000 feet of exploratory drilling to aid in the design of the Bypass and its supporting structures. Several borings were drilled along steep canyon walls to depths up to 250 feet.

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Hudson Falls Horizontal

General Electric commissioned the project to prevent contaminated PCB ground water from flowing into the Hudson River in upstate New York. Crux completed upward angled borings through rock to install drain wells and piezometers.

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I-90 Snoqualmie Pass Rockfall

Rock slide stabilization to assist in opening a busy roadway during the thanksgiving holiday. Equipment for installing rock bolts was craned into place due to continuing rock fall exposure and limited access.

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Jackson Hole Tram

Jackson Hole Mountain Resort planned the construction of a new tram to replace their existing 40-year-old line. Crux installed five tower foundations, requiring micropile/rock anchors with concrete caps, and two terminal foundations, consisting of large footings and highly reinforced foundations.

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Jackson Hydro Tunnel

Drilling and sampling of one 40-foot horizontal boring from within the confined power tunned. Packer testing was completed and a graduated marker was installed.

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JWPCP Effluent Outfall Project

Geotechnical drilling and in situ testing in challenging conditions. Packer testing and VWP installs completed.

Koolau-Wailupe 46 kV Circuits

Micropile foundation design and construction for replacement structures located in steep, rugged terrain on the island of Oahu. Crux provided helicopter supported installation equipment capable of drilling under in-serviece overhead lines.

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Lake Mead Intake No. 3

Various phases of work relating to construction of a third intake tunnel. Scopes included core drilling from surface land, from a specialty barge, and from within the starter tunnel, as well as installation of gravity dewatering holes and slick line tremies for grout placement.

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Lake Mead Shafts and Tunnel

Exploration drilling services, completing 12 exploratory vertical boreholes to 600 foot depths. . Drilling was also performed from the face of the entrance to the starter tunnel, including the installation of gravity dewatering holes and the drilling of long-range, horizontal exploratory core holes to lengths of 400 feet.

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Last Chance Grade

Core drilling and sampling in difficult-to-access locations and challenging subsurface conditions. Borings were accessed by both track drills and helicopter, and testing and instrumentation included Standard Penetration Testing (SPT), permeability testing, pressure meter testing, suspension logging, downhole imaging, and multi-level vibrating wire piezometer (VWP) and inclinometer installations.

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Lansing to Harmony Transmission Line

Crux provided 100 % design-build micropile foundation services for one structure and an adjacent 60-foot by 30-foot steel maintenance platform. Located on a 45 degree slope, helicopter transport was required for all materials, equipment and personnel.

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Laughlin Barge

Overwater drilling from custom barge system to determine feasibility of adding a second bridge. Challenges included substantial variations in water speeds.

Lolo to Oxbow Transmission Line

Micropile design and construction services for four three-legged monopole structures located in remote areas. All four were river crossing structures, and would be too heavily loaded for direct embeds.

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Lower Baker Dam

Multiple phases of work for various clients, with scopes including borings on the dam structure, from within the power tunnel, and for slope stability investigations. Packer testing, dye testing and downhole imaging were completed, and inclinometers, standpipe piezometers and VWPs installed. Access included track, crane and helicopter.

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Lower Churchill Project

Variable bedrock depths and boggy ground conditions created challenges for grillage and driven pile foundations at a number of sites, and Crux was engaged to provide a micropile design-build alternative. Designs were developed for self-supporting and guyed structures, and factored in variable bedrock quality as well bog up to 25 feet.

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Lower Granite Dam

Rock core borings from steep slopes, requiring crane access for equipment. Specific project challenges included winter weather, which created slippery conditions.

Lower McDonald Bridge Rehabilitation

Emergency rehabilitation services due to the failure of an existing bridge abutment. Crux was contracted to design and install six micropiles at this abutment. Piles were drilled through the existing bridge deck to supplement deteriorating timber piles.

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MPRP Central Loop – Seg 16

Design-build foundation services for eleven monopoles and one lattice tower structure along Segment 16DCT of the MPRP. Micropiles were selected as a deep foundation alternative at these structure locations due to high groundwater and the need to minimize the disturbance area of foundation construction activities on private lands.

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Manette Bridge Rehabilitation

Crane-supported geotechnical drilling within the bridge’s concrete piers to assist in identifying structural deficiency.

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Mosquito Road

Geotechnical drilling and sampling at both abutments of an approved new bridge across the South Fork of the American River. Boring locations were accessed exclusively by helicopter and were both vertical and horizontal.

 

MPBX Installation (Encore)

Drilling, sampling and instrumentation of one 250-foot borehole from within a resort parking garage.

 

NE Boundary Tunnel Project

Various phases of work for multiple clients. Scopes included installing permanent horizontal casings to support future ground freezing prior to tunnel construction. Drilling was completed below the water table from within a confined tunnel shaft.

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Northtown Mall Expansion

Design and installation of nine micropiles to retrofit existing foundation columns to support the higher building loads required for new retail space. Micropiles were installed from within the existing structure, and in close proximity to offices and business operations.

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Northwest Transmission Line

Design-build micropile foundation services for seven lattice towers along the alignment. These towers were located in rugged terrain not accessible to track vehicles, and required helicopter support to transport equipment, materials and crews.

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Oroville Dam Spillway

Geotechnical drilling and sampling on the inspection walkway of the Emergency Spillway. Boring were accessed by crane, and VWPs were installed. Challenges included low overhead clearance.

 

Palms Casino Underpinning

Soil remediation and micropile installation for underpinning to mitigate structural settlement issues.

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Paris to Ark City Transmission Line

Crux served as Foundation Contractor on the project, responsible for foundation selection, design and installation Several structures were located in close proximity to a canal wall and required additional analysis for foundation design. Ultimately, 18 structures were supported on micropiles and 22 on drilled shafts.

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Pfeiffer Canyon Bridge Emergency Storm Damage

Crux mobilized quickly, providing track and helicopter supported geotechnical drilling within the footprint of the failing bridge. Instrumentation included TDR cables, inclinometers and standpipe piezometers.

 

Pioneer Mountain to Eddyville

Geotechnical exploration drilling and instrumentation to assist in the design of a safer, shorter realignment.

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Point Pinole Tap 115 kV

Four replacement structures were located in close proximity to protected wetland habitat, and required a foundation alternative with a small installation footprint that could also accommodate variable subsurface conditions. Crux was selected to design and construct micropile foundations at these four structures.

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Rapelje-Nye 100kV

Micropile design-build services for a portion NorthWestern Energy’s a new 50-mile, 100 kV transmission line. The scope of work included the installation of 74 micropiles to support 10 new H-Frame towers in rugged, high elevation terrain.

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Rhinedollar 12 kV Transmission Line

100% design-build micropile foundation services for 13 replacement poles located in remote, high-altitude terrain. Helicopter supported construction methods were used.

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Salt Springs to Lower Bear Reservoir

Crux was awarded design-build foundation work for 19 tubular steel pole structures located on steep slopes and requiring helicopter support.

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San Vicente Dam Raise

Various phases of work including geotechnical drilling and sampling prior to the dam raise, as well as post construction coring and inclinometer installs. Access included helicopter and crane.

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San Vicente Post Construction Coring

The scope of work included 6-inch diameter coring at a variety of challenging locations across the dam. Three boring locations at the left abutment were accessed exclusively by helicopter, and employed helicopter portable cranes to assist in core handling and drill movement.

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Sterling Highway

Geotechnical drilling in off-road, challenging locations requiring custom Morooka carriers for equipment, material and crew transport. Slope indicators, standpipe piezometers and vibrating wire piezometers were installed as directed by the client, and packer testing was completed using single and straddle packers.

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Sunrise Geotechnical

Geotechnical drilling services at remote and environmentally sensitive locations to assist in foundation design for the Sunrise Powerlink Transmission Line.

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Sunrise Powerlink Project

Crux provided design and construction services for 800 steel cap micropile foundations. A portion of the alignment crossed through the Cleveland National Forest and required extreme environmental sensitivity during construction. This was the first application of Crux’s patent pending steel cap design on a lattice tower project.

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Susitna Watana Hydroelectric

Drilling and sampling to depths up to 400 feet for design of the planned facility. Borings were located on steep slopes 35 miles from the nearest road and were accessed by helicopter.

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Swan Lake-Lake Tyee Intertie

Construction of a 57.5 mile, 138 kV transmission line. For the 360 total tower foundations, approximately 45,000 lineal feet of micropiles and 9,000 feet of guy anchors were installed using micropile installation methodology.

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Swan Lake Pump Storage

Challenging access geotechnical exploration, requiring a combination of track and helicopter access due to higher-than-average snow levels and muddy conditions. Additional challenges included highly fractured and disjointed rock.

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Systems Conveyance & Operations Program

Drilling and geophysical services to determine potential pipeline alignments, provide information for the tunnel system, and develop a foundation design for the diffuser.

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Toketee Falls Quarry & Reservoir Drilling

Vertical and angle borings, both overwater from Crux’s custom barge system, and land borings on rocky, undulated terrain from specialty track-mounted equipment.

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Susquehanna to Roseland – Troy Meadows Segment

Design and construction of micropile foundations to support seven replacement structures in protected wetland habitat. Crus used helictoper supported construction methods and employed a unique closed cell cofferdam setup to successfully compelte installation.

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TRTP Geotechnical

Geotechnical exploration, consisted of drilling 81 geotechnical borings and a total of 4,800 feet for new transmission tower sites.

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TRTP Segment 1

Crux provided the design and construction for micropile foundations at 56 tower locations. These sites were located within the USFS Angeles National Forest, where road construction was prohibited and conventional track vehicle access was limited.

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TRTP Segment 11

Design-build concrete cap micropile foundations for 37 lattice tower structures. All sites were accessed by helicopter due to the rugged and environmentally protected terrain.

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Upriver Dam Spillway Rehabilitation Project

Crux assisted the contractor in providing preventative maintenance, installing twenty-seven 18-foot-deep pressure relief drains in the downstream apron of the dam.

US 60, Silver King & Superior Streets

Crux provided difficult access exploratory drilling to evaluate the improvement/realignment of US Route 60. Access included helicopter and track rig, and challenges included working in close proximity to the existing roadway.

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US 89 Page Landslide

Emergency core drilling and instrumentation for a landslide under US 89. Borings accessed by helicopter; scope included downhole imaging and inclinometer installation.

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Van Norman Complex Stormwater Capture

Geotechnical borings and standpipe piezometer installs utilizing track mounted equipment.

Willow Creek Dam Instrumentation

Limited space core sampling and instrument installation from within the interior gallery of the dam requiring equipment to accommodate access points as little as 45×79″. A combination of vibrating wire piezometers and standpipe piezometers were then installed in each boring.

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WMAT Miner Flat Dam

Core drilling and sampling for a feasibility study to construct a new dam and related facilities. Borings accessed by track rig; packer testing completed and VWPs installed.

Wood to Steel Replacements

Design-build services for steel cap micropile foundations on a number of segments. Challenges have included accurately orienting the foundations, working within 6 feet of existing in-service foundations, low overhead clearances due to energized lines, and environmentally sensitive work areas.

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