Transportation and Highway Projects
Corridor Contractors delivers DOT-grade highway construction, roadway earthwork, and transportation infrastructure across Washington, Idaho, Montana, and Oregon.
Built for the Road. Built to Last.
Transportation infrastructure is some of the most consequential civil work there is. Roads, highways, and transportation corridors serve thousands of people every day and the contractors who build them are accountable to a standard that doesn't allow for shortcuts. Corridor Contractors takes that accountability seriously.


Transportation & Highway Projects
We've built our transportation and highway capabilities around the agencies and prime contractors who need a civil partner with the equipment, the experience, and the DOT familiarity to perform on public transportation projects. We know WSDOT, ITD, and MDT specifications. We understand what pre-qualification requires and what agency inspectors are looking for in the field. And we bring the self-perform capacity to handle the earthwork, drainage, subgrade, and grading scopes that make up the core of most highway civil packages.

Highway and transportation projects operate on compressed schedules, tight traffic control requirements, and public visibility that puts every aspect of the work under scrutiny. The civil contractor on a transportation project has to move efficiently, document thoroughly, and coordinate seamlessly with DOT inspectors, prime contractors, and adjacent trades all while keeping production moving and maintaining a safe work environment for crews and the traveling public.
Corridor Contractors is investing in our transportation and highway portfolio because it's where our civil capabilities translate most directly into meaningful, lasting infrastructure. We've graded highway subgrade, constructed roadway drainage systems, performed mass earthwork on corridor projects, and delivered the precision grading work that paving contractors depend on to place pavement to spec. We bring GPS machine control to every grading operation which means tighter tolerances, less rework, and cleaner handoffs to the trades that follow.
We're actively pursuing transportation and highway project opportunities across our four licensed states both as a prime contractor and as a civil subcontractor to larger highway GCs. If you're a DOT, a prime contractor assembling a bid, or a project owner with a transportation scope in the pipeline, we'd like to be part of the conversation.
Services We Offer

Heavy Civil Earthwork
We perform large-scale cut and fill operations, rock excavation, site balancing, and haul operations on commercial, municipal, and industrial sites.

Asphalt Milling
We perform full-depth and partial-depth milling for roadway rehabilitation, parking lot reconstruction, and pavement maintenance projects.

Underground Utilities
Our crews are experienced in both open-cut and trench installation methods, with the equipment and knowledge to work in challenging soil conditions, tight tolerances, and high-traffic corridors.