Industrial & Mission-Critical
Massive sites prepared precisely, on schedules that cannot slip. Jansen delivers the full civil scope behind data centers, industrial campuses, and mission-critical facilities, from raw land through a build-ready pad.
- Data center site development
- Heavy civil pad preparation & massive earthmoving
- High-voltage / medium-voltage underground duct banks
- Structural foundations
- Concrete tilt-up facilities & warehouses
Transportation & Transit
Jansen builds the transit infrastructure the region depends on, including the RapidRide G, H, and J corridors, delivered through dense urban environments with the city still moving around us.
- Bus Rapid Transit (BRT) corridors
- Light rail civil support
- Highway paving
- Urban arterials
- Complete street reconstruction
Marine & Waterfront Infrastructure
From design/build shoreline protection in Louisiana to pedestrian bridge erection over Lake Union, Jansen performs heavy civil work where land meets water.
- Shoreline protection
- Seawalls & riprap
- Dock & pier foundations
- Near-shore heavy civil operations
Environmental & Ecological Restoration
Specialized restoration work for federal and municipal clients, performed in some of the most sensitive environments in the Pacific Northwest.
- USACE habitat projects
- Eelgrass restoration
- Fish passage structures
- Sensitive wetland stormwater management
Civil Utilities & Municipal Infrastructure
Beneath every street we rebuild is a network we've replaced. Deep utility systems coordinated across every agency and discipline that shares the corridor.
- Deep sewer & water trunk lines
- Major storm drainage vaults
- Wet utility relocations
- Municipal infrastructure renewal