A Few Featured Projects

Over the past 28 years, MidMountain Contractors, Inc. has participated in over $1.2 billion of heavy-civil construction across and wide-range of project types. We are proud of these efforts and to showcase the following Featured Projects:


CITY OF SEATTLE: Elliott Bay Seawall Replacement Project, Seattle, WA

Originally built between 1916 and 1934, replacement of the deteriorated seawall is necessary to provide an earthquake-resistant wall system capable of supporting extensive underground utility and right-of-way improvements along the Seattle waterfront. Specific elements of work performed by MidMountain include demolition of the existing seawall, excavation and grading, removal of contaminated soils, extensive buried-utility replacement, and roadway improvements.

SOUND TRANSIT: D To M Street Track and Signal Project, Tacoma, WA

The 1.4-mile D-to-M Streets track and signal project built new tracks between East D and South M Streets and installed train signaling systems between Tacoma and Lakewood. A new railroad bridge over Pacific Avenue keeps traffic flowing without interruption from trains crossing overhead. This was the final link for the extension of Sounder commuter rail service to South Tacoma and Lakewood Stations. Wetland mitigation included building an area in McKinley Park that recreated 0.45 acre of wetland, created a new stream channel and planted native trees and shrubs.

Boeing Composite Wing Center in Everett, WA

The location for the Boeing Composite Wing Center is shown during a phase of early construction. At 1.3 million square-feet, the building can accommodate 25 football fields, and will support wing fabrication for the 777X program. Requiring more than 530,000 cubic yards of fill material, site development required access to a significant labor, equipment, and subcontracting resource pool. At its peak, MidMountain employed more than 200 workers at the project site.

WSDOT: SR 99 Spokane Street Overcrossing, Seattle, WA

The 470-foot long bridge, originally built in 1959, was replaced with light-weight Styrofoam block material capped with a new concrete pavement roadway surface. Travel lanes were reduced and shifted to allow re-construction of the bridge one half at a time.