TRI-STATE CONSTRUCTION, INC.
General Contracting
TRISTC*356R8
From its origins as a small northwest construction company over four decades ago, Tri-State Construction, Inc. has earned a leading position in earth moving, landfill, and pipeline construction, eventually emerging as one of the region's prominent interstate general contracting firms. We earned this reputation by being receptive to our clients' needs, by maintaining a strong work ethic, and by following the cutting edge of construction technology. Tri-State Construction started a new division in 2005 for building concrete structures such as bridges, tunnels, and walls. Even with such a new division Tri-State Construction lead the way in new technology in working with WSDOT to use pre-casted pier caps for concrete bridges which shortens construction by three weeks as seen on one our initial bridge building projects.
Tri-State Construction has offices and jobsites in many cities around Washington and Oregon. Our Corporation Office is in Bellevue, Washington. We currently have over 25 major construction projects with owners from many different public works agencies such as WSDOT, City of Everett, WA, ODOT, and Lane County, Oregon. Tri-State Construction jobs range from a WSDOT Design Build in Renton, WA which widened I-405 for a cost of $91.5 Million to a few hundred thousand dollars emergency repair jobs. One such jobs was on the way to Mt. Hood in Oregon. Mt. Hood is a prominent ski area and they had a landslide which closed the road and the ski resort to the Portland Area. Tri-State Construction was able to open the road quickly to the great appreciation of the Ski Resort and Skiers.
Tri-State Construction is a union company. We are signatory to the AGC Agreement with the following Unions Carpenters, Operators, Teamsters, and Laborers.
Below are links to TSI owner's websites for further information on our current projects:
Coming Soon!
Below are some examples of our jobs:
Tri-State Construction was prime contractor on the WSDOT Downtown Bremerton Pedestrian BTC Access Improvements in Bremerton, WA. Tri-State Construction completed a 959 foot tunnel in the middle of Downtown Bremerton to increase safety and traffic flow from the ferry dock. The tunnel inlcuded pouring and forming 3,029 CY of Class 4000 and 1,051 CY Class 4000 with Xypex additive for the Tunnel Invert, 2,458 CY of Class 4000 with Xypex additive for Tunnel Walls, 1,133 CY Class 4000 with Xypex for Top Deck of Tunnel which was poured over the Pre-Cast Panel lids. Tri-State built nine retaining walls with 2,065 CY for the Tunnel Retaining Walls, 113 CY for the Concrete Barrier. This project including building an administration building, three toll booths for the WSF. It also included an electrical building for the tunnel. Tri-State Construction work also including a water treatment system that treated over 30 million gallons of water. Removing and replacing a CSO Storm Line, sanitary sewer and water lines, and new fire lines for the tunnel.
Below: Temporary Shoring for Walls Completed now working on rebar for the walls and floor.
Tri-State Construction was a prime contractor project completed the WSDOT SR 520 -West Lake Sammamish Parkway to SR202 Flyover Ramp in Redmond, WA. The project was approxiatemetly $10 Million dollars and included construction of two interim on-ramps to WB SR-520 from SR-202, drainage, retaining walls, two lane bridge, signing, illumination systems, ITS, and stream mitigation.
Below: TSI is setting the pre-cast girders for this project.
Tri-State Construction was a subcontractors on the Third Runway Embankment project for the Port of Seattle which TSI moved thousands of tons of dirt and built at that time the largest MSE Wall in North America.
Below: 3rd runway construction at Sea-Tac Airport
