Company Info

  • Est. 1985
  • Annual Vol Undisclosed

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Our Story

Shotcrete Construction Company

Dees-Hennessey Inc. has served Northern California since 1985 and is locally owned and operated.

It was begun in 1985 when Delbert Dees, an expert in shoring, and Pete Hennessey, an expert in excavation, branched out and started a company together. Dan Evans, a shotcrete expert, joined the company in 1986. Together, our staff of engineers has more than 100 years of combined experience.

All our field employees are unionized. We hire specialized personnel to ensure highest quality materials and products for all jobs.

We customize every job to meet the customer’s specifications and hire specialized personnel for every specific job, thus ensuring we use the highest quality materials and products for all jobs.

We start out with a design and a quote and then go into implementation and completion. We control everything until the project is complete.

Why Choose Dees-Hennessey Inc.?

  • Personalized service
  • Responsible for the entire job from start to finish
  • Track record of on time on budget
  • High safety compliance
  • High safety standards
  • More than 28 years in business
  • 100 years of combined engineering experience
  • Serving Northern California
  • Free estimates

What We Do

Regions & Counties Serviced

  • San Francisco, Oakland, San Jose
  • California-Central Valley-Sacramento, Fresno, Bakersfield

California 45

  • Alameda
  • Alpine
  • Amador
  • Butte
  • Calaveras
  • Colusa
  • Contra Costa
  • Del Norte
  • El Dorado
  • Fresno
  • Glenn
  • Humboldt
  • Kern
  • Kings
  • Lake
  • Lassen
  • Madera
  • Marin
  • Mariposa
  • Mendocino
  • Merced
  • Modoc
  • Napa
  • Nevada
  • Placer
  • Plumas
  • Sacramento
  • San Francisco
  • San Joaquin
  • San Mateo
  • Santa Clara
  • Santa Cruz
  • Shasta
  • Sierra
  • Siskiyou
  • Solano
  • Sonoma
  • Stanislaus
  • Sutter
  • Tehama
  • Trinity
  • Tulare
  • Tuolumne
  • Yolo
  • Yuba

Our CSI Codes

01 73 23 - Bracing and Anchoring
02 31 13 - Seismic Investigations
03 37 13 - Shotcrete
13 01 51 - Operation and Maintenance of Stress Instrumentation
13 01 52 - Operation and Maintenance of Seismic Instrumentation
13 48 53 - Manufactured Seismic Control Components
13 48 63 - Fabricated Seismic Control Assemblies
13 51 00.00.01 - Stress Instrumentation
13 52 00.00.01 - Seismic Instrumentation
21 05 48 - Vibration and Seismic Controls for Fire-Suppression Piping and Equipment
25 05 48 - Vibration and Seismic Controls for Integrated Automation
31 01 40 - Maintenance of Shoring and Underpinning
31 06 40 - Schedules for Shoring and Underpinning
31 33 33 - Shotcrete Rock Slope Stabilization
31 40 00.00.01 - Shoring and Underpinning
31 48 13 - Underpinning Piers
31 48 33 - Micropile Underpinning
31 63 33 - Drilled Micropiles
31 74 19 - Shotcrete Tunnel Lining
41 33 23 - Drilling Equipment
41 66 13 - Mobile Boring and Drilling Rigs
45 11 01 - Operation and Maintenance of Oil and Gas Extraction Equipment
45 11 06 - Schedules for Oil and Gas Extraction Equipment

Project Experience

  • Union
  • Public
  • Private
  • Projects From $2 to $2,000,000,000

Gallery

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Service Area and Locations Map for Dees-Hennessey, Inc.

Associations & Memberships

ADSC (The International Assn. of Foundation Drilling)
ADSC (The International Assn. of Foundation Drilling)
ASA (American Shotcrete Assn.)
ASA (American Shotcrete Assn.)
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