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Tetra Tech INCA
About Us
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Site Map
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Locations
Bellevue, WA
Metairie, LA
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Services
Civil and Survey, Transportation and Transit
Roadway and Highway Design
Union Hill Road Widening
NE 85th Street and 164th Avenue NE
Marine View Drive Emergency Slide Repair
Marine View Drive (SR 509) Bridge Replacement
I-90 / Eastgate Transit Access / 142nd Place SE HOV Ramps
Coal Creek Parkway Improvements
Bel-Red Corridor Study
228th Avenue SE Widening Phase I-B
Transit and Multimodal Facilities
University Street Underground Transit Station
UW Bothell Branch Campus Transit Center
Northgate Transit Center, Park and Ride Facility
Lynnwood Transit Center, Park-and-Ride Lot
Everett Station Multi-Modal Transit Center
Columbia Station Multimodal Transit Center
College Station Transit Center
I-405 Canyon Park Freeway Station
Bonney Lake Park-and-Ride Lot Design / Build
East Corridor High Capacity Transit (HCT) Phase 2
LINK Light Rail S700 Aerial Structures
Kirkland Transit Center
Burien Transit Center
Transit and Multimodal Facilities
Traffic Control and Signals
Neighborhood Traffic Safety Program, City of Shoreline
NE 8th Street & 116th Avenue NE Intersection, City of Bellevue
NE 124th Street In-Pavement Flashing Crosswalk System
Costco Wholesale Outlet Traffic Studies and Signal Designs, Various Locations
Kirkland Intersections, City of Kirkland
Survey and Mapping
Topographic Design Mapping
Sound Transit 2 East Link
West Lake Sammamish Parkway
Olympia Intercity Transit
I-405 South Bellevue Design Build
Boundary and Cadastral Surveying
Tacoma Second Supply
Sound Transit On-Call Surveying Services
Construction Surveying
I-405 South Bellevue Design Build Survey for Construction
Bellevue Direct Access
I-5 Everett HOV Design Build
Bathymetric and Hydrographic Surveying
Teanaway River Topographic and Hydrographic Surveys
Blair Waterway Stilling Basins
Thea Foss Waterway
Sitcum Waterway
Pierce County Terminal Wharf
Aerial Photogrammetry Control
King County Ortho
MS Mapping: Aerial Mapping and Associated Surveys; Microsoft Corporation
Digital Orthophotography and Mapping; Pierce County
East Lake Sammamish Aerial Mapping; King County
GPS Control Surveying
I-90 - Eastgate Transit Access
Eastside Regional Pipeline
Settlement Monitoring
Sea-Tac Airport Baggage Screening
Henderson - Martin Luther King CSO Surveying
Pedestrian Facilities and Bicycle Paths
Phantom Lake Walkway, City of Bellevue
Arboretum Lakeside Trail, City of Seattle
Federal Way Pedestrian/Bike Trail, City of Federal Way
North SeaTac Park Master Plan Survey, City of SeaTac
Kamber Road, City of Bellevue
Des Moines Creek Trail, City of Des Moines
Rhododendron Trail, Island County
Pedestrian Facilities and Bicycle Paths
Stormwater and Utilities
Kirkland Transit Center
Burien Transit Center, King County
Eastgate Transit Access to I-90
I-405 Canyon Park Freeway Station
Kamber Road Improvements - East Creek Culvert
I-5 South Everett Freeway Station at 112th Street SE
Stormwater and Utilities
Specialized Project Delivery Services
Pierce County Project Delivery System
WSDOT Project Delivery Evaluation
SR 20: Fredonia to I-5 Widening
Real Estate Services Project Management Support
SR 9, I-90, SR 900 Project Scoping
CMF Schedule Development, Pierce County
Navigation, Flood Control and Marine
Navigation, Locks and Dams
Chickamauga Lock Replacement Upstream - Downstream Approach Walls
Charleroi Lower Floating Guard Wall
Marmet Lock Upstream Guard Wall Replacement
Upper Mississippi Lock 22 and 25 Concept Study
Olmsted Lock and Dam Approach Walls
Kentucky Lock Addition Floating Caisson
Bonneville Lock Fixed and Floating Guide Wall
Fish Passage
Howard Hanson Dam Fish Passage Facility
Green River Headworks Modifications
Ice Harbor and Lower Granite Locks and Dams Adult PIT Tag Systems
Bonneville Juvenile Bypass System Multi-Level Outfalls Design
Flood Control
Yellow Creek Channel Walls
Rio Puerto Nuevo Channel Walls
Mud Mountain Dam Right Bank Stability
Bluestone Dam Intake Tower
Bayou Segnette Pump Station and Company Canal
Inner Harbor Navigation Canal (IHNC) Hurricane Protection Barrier
Cougar Lake Diversion Tunnel
Ports and Harbors
Terminal 30 Apron Reconstruction and Yard Improvements
Terminal 4 Fender Study
Sitka Floating Dock
Tacoma Pier 23 Renovation
Mechanical and Electrical
The Dalles Dam Spillway Gantry Gate
Lower Baker Dam Spillway Gate Care Replacement
John Day Lift Gate Evaluation
Ice Harbor - Lower Monumental Upstream Gate Repairs
Chicago Underflow Plan for McCook Reservoir
Charleroi Gate and Valve Monolith
Bonneville Second Powerhouse Bridge Crane Refurbishments
Bonneville Corner Collector Entrance Gate and Piping
Bridges and Structures
Stationary Structures
LINK Light Rail S700 Aerial Structure
P&L Railroad Bridge Relocation
Marine View Drive Bridge
SR 526 and I-5 Interchange and Flyover Ramp
South 160th Street Loop Ramp
I-90 Corridor Design
Bridge Inspection and Rating Program
Retaining Walls and Foundations
I-90 Corridor Retaining Walls
Des Moines Memorial Bridge
Coal Creek Parkway
Movable Bridges
Eastside High Capacity Transit
Illinois Street Bridge
Hydropower
Swift No. 2 Hydroelectric Project
Dworshak National Fish Hatchery Reuse System
Chicago Underflow Plan McCook Reservoir - Hydropower
Spokane Upriver Dam Study
Tieton Dam Hydroelectric Facility
Project Description Downloads
Press Room
In The News
Tetra Tech Ranks Number One
Kirkland Transit Center Grand Opening
INCA's work on IHNC featured in 'Civil Engineering' magazine
INCA's Union Hill Road project wins Washington Aggregates and Concrete Association award
Howard Hanson Additional Water Storage and Fish Passage Restoration wins SAME Large Business GOLD Award
Tetra Tech announces INCA acquisition
Howard Hanson Additional Water Storage and Fish Passage Restoration project wins ACEC Washington Silver Award
Marine View Drive (SR 509) Bridge project wins ACEC Washington Bronze Award
Project News
2010 Engineering Excellence Awards Winner
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