Transit & Roads
RapidRide corridors, complete streets, and urban infrastructure across Seattle and Western Washington. Beneath every corridor: complex utility relocations, deep excavation, duct banks, and site grading executed under live city streets
RapidRide J Line
SDOT & King County Metro · Seattle WA
RapidRide J Line
Transit Corridor Construction · Seattle WA
Madison BRT RapidRide G Line
Seattle WA
Madison BRT RapidRide G Line
Seattle WA
Delridge Way SW
RapidRide H Line · Seattle WA
Delridge Way SW
Seattle WA
Delridge Way SW
Underpass · Seattle WA
Delridge Way SW
Aerial · Seattle WA
Delridge Way SW
Aerial · Seattle WA
Madison Bus Rapid Transit
RapidRide G Line Aerial · Seattle WA
Madison BRT
Construction · Seattle WA
Madison BRT
Construction · Seattle WA
Madison BRT
Aerial · Seattle WA
Madison BRT
Aerial · Seattle WA
Field Operations
Seattle WA
Roosevelt Way NE
Seattle WA
23rd Avenue South
Concrete Paving · SDOT · Seattle WA
Concrete Flat Work
Broom Finish · Seattle WA
Denny Park
Seattle WA
Longfellow Natural Drainage
Seattle WA
Jansen Infrastructure
Seattle WA
Marine & Environmental
Shoreline protection, habitat restoration, and marine construction for federal and municipal clients
Louisiana Shoreline Protection
Design/Build · Environmental & Marine
Shoreline Protection
Design/Build · Completed · Louisiana
USACE Eelgrass Restoration
Pacific Northwest
USACE Eelgrass Restoration
Pacific Northwest
Lake Union Pedestrian Bridge
Foss 300 Bridge Lift · Seattle WA
Lake Union Pedestrian Bridge
Seattle WA
Gorge Dam
Washington
Gorge Dam Bank Stabilization
Washington
Big Hanford
Centralia WA
Columbia River Bank Restoration
Environmental · Washington
Environmental Stream Restoration
Engineered Log Jams · Washington
Highway
State route improvements and county road construction across Washington
SR 20 Highway Improvements
WSDOT · Rockport WA
SR 20 Highway Improvements
WSDOT · Rockport WA
SR 20 Highway Improvements
WSDOT · Rockport WA
Lockwood Road
Snohomish County WA
Buildings & Private Development
Concrete tilt-up construction and private site development, from single structures to full industrial parks
Lockt Storage
Ground-Up Self-Storage Development · Ferndale WA
Lockt Storage
Ferndale WA
Lockt Storage
Ferndale WA
Fiksdal Building
10,000 SF Concrete Tilt-Up
I-5 Industrial Center
75-Acre Industrial Park · Permitted & Developed by Jansen
Concrete Tilt-Up
Commercial Construction
Legacy Projects
A history of heavy civil work reaching from Washington to Alaska and Hawaiʻi
Laupahoehoe Breakwater
Marine Construction · Hawaiʻi
Fairbanks Bridge
Fairbanks AK
Bellevue Municipal Golf Course
Bellevue WA