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Our Story

DeWitt Construction Inc. was founded in 1979 and is a fully licensed, insured and bondable contractor capable of handling all of your deep foundation and excavation needs. The founding owner and company officers have worked hard over the years to become one of the most respected and experienced Companies in the Northwest. We pride ourselves on giving every job the complete benefit of this experience, in service, cost control and problem solving.

DeWitt Construction Inc. is committed to expanding our knowledge and experience in safety, quality, and job execution. We have an extensive fleet of well-maintained equipment, and we continue to extend our ability to offer the best solutions to your deep foundation and excavation needs.

What We Do

Commercial Experience

Apartments & Condominiums Bank Bridge Court House Hospital / Nursing Home Hotel / Motel Industrial Maintenance Misc Project Mixed Use Non-Residential Building Office Building Parking Garage School / College / University Storage Facility / Warehouse Terminal - Airport / Bus / Railroad
Animal Hospital / Kennel Arena / Stadium Assisted Living Athletic Field Auto Dealership / Service Casinos City / Town Hall Civil & Site Development Data Centers - Mission Critical Design Build Education (K-12) Fire / Police Station Fitness Center Gas Station Government Grocery Stores Jail / Prison Laboratory Library Manufacturing Plant Medical Office Military Museum Residential Building Restaurant Retail Store Road / Highway Sewage / Water Treatment Plant Theater

Regions & Counties Serviced

  • San Francisco, Oakland, San Jose
  • Arizona
  • Seattle
  • Portland
  • Idaho, Eastern WA

Alaska All

California All

Idaho All

Montana All

North Dakota All

Oregon All

Utah All

Washington All

Our CSI Codes

01 73 23 - Bracing and Anchoring
03 06 30.23 - Concrete Shaft Schedule
31 01 10 - Maintenance of Clearing
31 01 20 - Maintenance of Earth Moving
31 01 40 - Maintenance of Shoring and Underpinning
31 01 50 - Maintenance of Excavation Support and Protection
31 01 60 - Maintenance of Special Foundations and Load Bearing Elements
31 01 62 - Maintenance of Driven Piles
31 01 62.61 - Driven Pile Repairs
31 06 10 - Schedules for Clearing
31 06 20 - Schedules for Earth Moving
31 06 40 - Schedules for Shoring and Underpinning
31 06 60.13 - Driven Pile Schedule
31 06 60.16 - Caisson Schedule
31 09 16.23 - Driven Pile Load Tests
31 11 00.00.01 - Clearing and Grubbing
31 12 00.00.01 - Selective Clearing
31 14 13 - Soil Stripping and Stockpiling
31 14 13.13 - Soil Stripping
31 14 13.16 - Soil Stockpiling
31 14 16 - Sod Stripping and Stockpiling
31 14 16.13 - Sod Stripping
31 14 16.16 - Sod Stockpiling
31 20 00.00.01 - Earth Moving
31 22 13 - Rough Grading
31 22 16 - Fine Grading
31 22 19 - Finish Grading
31 22 19.13 - Spreading and Grading Topsoil
31 23 16 - Excavation
31 23 16.13 - Trenching
31 23 16.16 - Structural Excavation for Minor Structures
31 23 16.26 - Rock Removal
31 23 33 - Trenching and Backfilling
31 40 00.00.01 - Shoring and Underpinning
31 41 13 - Timber Shoring
31 41 19 - Metal Hydraulic Shoring
31 41 19.13 - Aluminum Hydraulic Shoring
31 41 23 - Pneumatic Shoring
31 41 33 - Trench Shielding
31 48 13 - Underpinning Piers
31 48 33 - Micropile Underpinning
31 50 00.00.01 - Excavation Support and Protection
31 52 13 - Sheet Piling Cofferdams
31 52 16 - Timber Cofferdams
31 52 19 - Precast Concrete Cofferdams
31 62 13.13 - Cast-in-Place Concrete Piles
31 63 16 - Auger Cast Grout Piles
31 63 23 - Bored Concrete Piles
31 63 23.13 - Bored and Belled Concrete Piles
31 63 23.16 - Bored Friction Concrete Piles
31 63 26 - Drilled Caissons
31 63 26.13 - Fixed End Caisson Piles
31 63 26.16 - Concrete Caissons for Marine Construction
31 63 29 - Drilled Concrete Piers and Shafts
31 63 29.13 - Uncased Drilled Concrete Piers
31 63 33 - Drilled Micropiles
31 64 13 - Box Caissons
31 64 16 - Excavated Caissons
31 64 19 - Floating Caissons
31 64 23 - Open Caissons
31 64 26 - Pneumatic Caissons
31 64 29 - Sheeted Caissons
35 41 16 - Levee Cutoff Trenches
35 53 43 - Underwater Foundation Construction
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 $5,000 to $9,000,000

Gallery

Featured Image 1
Mixed Use Building
Featured Image 2
Modera Glisan
Featured Image 3
Pettygrove
Featured Image 4
Porter Hotel
Service Area and Locations Map for DeWitt Construction Inc.

Associations & Memberships

AGC of Texas
AGC of Texas
PDCA (Pile Drivers Contractors Assn.)
PDCA (Pile Drivers Contractors Assn.)
ADSC-IAFD (International Assn. of Foundation Drilling)
ADSC-IAFD (International Assn. of Foundation Drilling)
AGC of Oregon
AGC of Oregon
AGC (Associated General Contractors)
AGC (Associated General Contractors)
DFI (Deep Foundations Institute)
DFI (Deep Foundations Institute)
OSHA (Occupational Safety & Health Administration)
OSHA (Occupational Safety & Health Administration)

Preferred Brands

Dewitt's Products Co.
Dewitt's Products Co.
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