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Tenders›Washington›Construction
Construction · Washington · AI-Scored

Construction
Contracts in
Washington

Washington's annual procurement of $40B+ includes a substantial share for construction and civil works, driven largely by WSDOT's multi-billion-dollar capital programs and local infrastructure needs. The state uses WEBS for solicitations, but many large civil projects are let through WSDOT's separate bid letting system, with prevailing wage rates set by L&I and enforced via certified payroll. The market spans highway/bridge construction (NAICS 237310), water/sewer line work (237110), and commercial/institutional building (236220), with a strong focus on seismic resilience and environmental mitigation due to the region's geology and salmon recovery mandates.

Find Construction Tenders in WA →
State / ProvinceWashington (WA)
IndustryConstruction & Civil Works
Primary PortalWEBS
Annual Market$400B+
Key NAICS Codes236220, 237310, 237110
What We Track

Construction tender types in Washington

road repairbridge constructionbuilding renovationcivil engineeringinfrastructureNAICS 236220NAICS 237310NAICS 237110NAICS 237120NAICS 237130
Why This Market

Why Washington is a distinct construction market

Washington's construction market is shaped by its fast-growing population, the Puget Sound megaregion's congestion, and a legal mandate to replace aging fish passage barriers under the Culvert Remediation program. The state's Growth Management Act funnels development into urban growth areas, creating sustained demand for civil works that support densification, transit-oriented development, and stormwater infrastructure. Additionally, the combination of marine climate, seismic risk, and tribal consultation requirements makes Washington projects technically distinct from those in drier or less regulated states.

How to Win

Tactical advice for this market

To win here, register in WEBS and also in WSDOT's Bid Letting system; many prime opportunities for civil works require bonding capacity above $5M and a Washington contractor license with the correct specialty endorsements. Invest in a strong safety record and apprenticeship utilization—L&I's prevailing wage audits and DSHS's project labor agreements for large capital projects favor bidders with documented compliance history. Build relationships with tribal nations early if your work touches waterways or cultural resources, as many projects require government-to-government consultation that can affect timelines and subcontracting plans.

FAQ

Frequently asked questions

What are the most active NAICS codes for Washington state construction bids?
The top codes are 237310 (Highway, Street, and Bridge Construction) for WSDOT projects, 237110 (Water and Sewer Line and Related Structures Construction) for municipal and state water infrastructure, and 236220 (Commercial and Institutional Building Construction) for state facility projects. 237120 (Oil and Gas Pipeline) and 237130 (Power and Communication Line) appear less frequently but are critical for energy and broadband expansion.
Do I need a specific Washington contractor license to bid on state civil works?
Yes, you need a valid Washington contractor registration from L&I, and for most civil projects you'll need the appropriate specialty classification (e.g., 'General Engineering Contractor' for highway/bridge work). Many solicitations also require a Washington business license and proof of workers' compensation coverage. Out-of-state contractors must register and may need to post a bond with the state.
How does the Culvert Remediation program affect bidding opportunities?
This is a court-ordered program requiring WSDOT to fix hundreds of fish passage barriers, generating a steady pipeline of civil works contracts through at least 2030. Projects involve stream restoration, culvert replacement, and road realignment, often with strict in-water work windows (typically July–October) and environmental monitoring requirements. Contractors with experience in instream construction and salmon habitat mitigation are highly competitive.
What are the key differences between bidding on WSDOT projects vs. other state agency projects?
WSDOT uses a formal bid letting process with a published schedule, electronic bid submission via ProjectWise or Bid Express, and a strict low-bid award for most projects. Other agencies like DSHS or Commerce often use competitive RFPs with technical evaluation factors, including subcontractor utilization plans and safety records. For small projects under $350K, agencies may use the small works roster, which requires pre-qualification and rotating invitations.
Related Search Terms

How people search for this

Washington state construction bidding requirementsWSDOT civil works contract opportunitiesprevailing wage Washington public works projectsWashington state highway construction NAICS 237310WA state agency capital project procurementfish passage barrier removal contracts WashingtonWashington state water infrastructure bidscommercial building contracts Washington DSHS
Construction & Civil Works in Other States
Construction in Texas →Construction in California →Construction in New York →Construction in Florida →Construction in Illinois →Construction in Georgia →Construction in Ohio →Construction in North Carolina →

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