BRIDGES, HIGHWAY

West Seattle Swing Bridge, Seattle, Washington

This bridge was Phase II of the West Seattle Bridge Project. ABKJ led a design team to create this concrete double-leaf swing bridge that crosses the Duwamish River and connects Harbor Island to West Seattle. With a span of 480’, it is one of the largest swing bridges in the world.

Awards


Grand Award, Engineering Excellence - American Consulting Engineers Council
Grand Award, Excellence in Engineering - Consulting Engineers Council of Washington
Grand Award and Best Public Works Project Award - Washington Aggregates and Concrete Association
Outstanding Civil Engineering Achievement Award - American Society of Civil Engineers
Outstanding Engineering Achievement Award - National Society of Professional Engineers
West Seattle Swing Bridge, Seattle, Washington West Seattle Swing Bridge, Seattle, Washington West Seattle Swing Bridge, Seattle, Washington West Seattle Swing Bridge, Seattle, Washington

West Seattle High Level Bridge, Seattle, Washington

This bridge was Phase I of the West Seattle Bridge Project. ABKJ led a design team to replace a damaged bascule bridge. The project included a 590' concrete box girder structure with spans of 375', 590', and 375', and continuous prestressed girder spans up to 185' long. The High Level Bridge provides 5,600' of elevated freeway with a vertical clearance of 140' above the water.

Awards


Honorable Mention Design Award - Consulting Engineers Council of Washington
West Seattle High Level Bridge, Seattle, Washington West Seattle High Level Bridge, Seattle, Washington West Seattle High Level Bridge, Seattle, Washington West Seattle High Level Bridge, Seattle, Washington

Mount Si Bridge Replacement, King County, Washington

This structure replaced a deteriorating bridge that was more than 90 years old. The new bridge utilizes 406 tons of steel and is 240’ long with an average width of 43’. The Mount Si Bridge serves as a vital link across the Snoqualmie River and as a gateway to regional outdoor activities within the Mount Si Natural Resources Conservation Area. A steel Pratt truss design was chosen to meet the project goals of aesthetics, historical continuity, cost, ease of construction, and long-term maintenance requirements.

Awards


Best Medium-Span Steel Bridge Design - National Steel Bridge Alliance
Mount Si Bridge Replacement, King County, Washington Mount Si Bridge Replacement, King County, Washington Mount Si Bridge Replacement, King County, Washington Mount Si Bridge Replacement, King County, Washington

SR 405 Braided Ramps, Bellevue, Washington

This design/build project separates vehicles entering and exiting northbound I-405 between NE 8th Street and SR 520. It alleviates congestion at the I-405/SR 520 intersection by eliminating traffic weaves. As a member of the design/build team, ABKJ provided structural design and construction support services for two of the direct access ramp structures.
SR 405 Braided Ramps, Bellevue, Washington SR 405 Braided Ramps, Bellevue, Washington SR 405 Braided Ramps, Bellevue, Washington SR 405 Braided Ramps, Bellevue, Washington

23rd Street Viaduct, Denver, Colorado

This 3,600’ structure connects downtown Denver to the I-25/I-70 loop around the city. It crosses the parking lot of the Coors Field baseball stadium, the rail yard of the Burlington Northern Railroad, and the South Platte River. The design utilizes seven composite welded steel girder bridge units ranging from 66' to 140' wide. The 140' wide sections carry 8 lanes of traffic plus a middle turn lane and 12.5’ sidewalks on both sides.
23rd Street Viaduct, Denver, Colorado

Alderwood SR 524 Interchange, Lynnwood, Washington

The project accomplishes major capacity improvements to the west side of the 196th Street Interchange on I-5. ABKJ designed three bridges on Alderwood Mall Boulevard. Other design tasks included freeway ramps and street design, retaining wall design, drainage, channelization, signalization, signing, illumina¬tion and ramp metering.

Awards


Structural Systems Honor Award - CECW
Excellence in Concrete Construction Award - WACA
Alderwood SR 524 Interchange, Lynnwood, Washington Alderwood SR 524 Interchange, Lynnwood, Washington Alderwood SR 524 Interchange, Lynnwood, Washington Alderwood SR 524 Interchange, Lynnwood, Washington

Approach to Terminal 5, Seattle, Washington

This high-profile freight mobility project was a key element in the Port of Seattle’s redevelopment of the Southwest Harbor area. It included a 1,300’ composite steel plate girder bridge with reinforced concrete piers and deck, an approach roadway, a bicycle trail, and coordinating with land owners to maintain and improve access to their properties.
Approach to Terminal 5, Seattle, Washington Approach to Terminal 5, Seattle, Washington Approach to Terminal 5, Seattle, Washington Approach to Terminal 5, Seattle, Washington

Bandaret Bridge Replacement, King County, Washington

ABKJ designed the bridge replacement and road revisions for this structurally-deficient and narrow bridge that was too costly to repair and maintain. The replacement bridge has two 12’ travel lanes and two 8’ shoulders for pedestrians and bicycles. At 100’, the span is 40’ longer than the original bridge to meet floodway requirements for Issaquah Creek.
Bandaret Bridge Replacement, King County, Washington Bandaret Bridge Replacement, King County, Washington Bandaret Bridge Replacement, King County, Washington Bandaret Bridge Replacement, King County, Washington

California Street Overpass, Everett, Washington

This freight mobility project separates the main Port of Everett access road and the waterfront over railroad tracks. ABKJ prepared a Bridge Concept Study that helped select a shallow depth, post-tensioned, cast-in-place concrete box girder design. The bridge geometry was highly challenging with a sharp horizontally-curved alignment (327' radius), skewed pier and abutments, and a vertical bridge curve.
California Street Overpass, Everett, Washington California Street Overpass, Everett, Washington California Street Overpass, Everett, Washington California Street Overpass, Everett, Washington

Elliott Bridge, King County, Washington

ABKJ led a multidiscipline team and prepared the civil and structural design and PS&E of the bridge replacement and roadway improvements, including a new 400', 2-span steel-plate girder bridge, a new roadway alignment for 154th Place SE, and raising the grade of Jones Road and 154th Place SE 12' to match the grade of the new bridge.
Elliott Bridge, King County, Washington Elliott Bridge, King County, Washington Elliott Bridge, King County, Washington Elliott Bridge, King County, Washington

Fremont Bridge Approaches, Seattle, Washington

This bridge is the key link between the Fremont neighborhood and the Queen Anne and Westlake communities. After nearly 90 years, the approaches were deteriorating and not up to current seismic codes. ABKJ prepared the structural alternatives for the TS&L Study and completed the PS&E for the south approach and the off-ramp to North 34th Street.

Awards


Gold Award for Original or Innovative Application of New or Existing Techniques - ACEC Washington
Fremont Bridge Approaches, Seattle, Washington Fremont Bridge Approaches, Seattle, Washington Fremont Bridge Approaches, Seattle, Washington Fremont Bridge Approaches, Seattle, Washington

French Creek Bridge Replacement, Snohomish County, Washington

ABKJ provided final design and construction support services for this 116’ long, 42’ wide precast prestressed concrete decked bulb-tee girder bridge. The new structure replaced a timber trestle bridge inadequate for traffic loads. The bridge was designed to resist buoyancy forces from a 100-year flood that may temporarily submerge the structure under water.
French Creek Bridge Replacement, Snohomish County, Washington French Creek Bridge Replacement, Snohomish County, Washington French Creek Bridge Replacement, Snohomish County, Washington

Navajo Bridge, Marble Canyon, Arizona

ABKJ provided engineering consultation services to the Arizona Department of Transportation for removing load and geometric restrictions from a 616’ arch bridge over the Grand Canyon of the Colorado River. The selected alternative was a new 726’ steel arch span constructed adjacent to the existing bridge. ABKJ was responsible for design criteria and procedures, independent design check, and erection concept design and analysis.
Navajo Bridge, Marble Canyon, Arizona Navajo Bridge, Marble Canyon, Arizona Navajo Bridge, Marble Canyon, Arizona Navajo Bridge, Marble Canyon, Arizona

NW 8th Street Bridge Replacement, North Bend, Washington

ABKJ designed the bridge replacement and roadway design for this project located in the City of North Bend’s flood plain. The new bridge meets BRAC’s requirements for HS-25-44 live load and all current seismic and AASHTO design requirements. The project also eliminated piles in the creek and increased the roadway speed limit with improved sight distances.

Awards


Bronze Award, Original or Innovative Application of New or Existing Techniques - ACEC Washington
NW 8th Street Bridge Replacement, North Bend, Washington NW 8th Street Bridge Replacement, North Bend, Washington NW 8th Street Bridge Replacement, North Bend, Washington

Pacific Highway South Bridge Replacement, Tukwila, Washington

This 218’ steel plate girder bridge clear spans the Duwamish River to avoid disturbing fish habitat and migration. The design involved developing a staged construction to maintain traffic flow on this busy highway during construction. A 2-lane detour bridge was constructed, later put on rollers, and moved 12' upstream to complete the permanent bridge.
Pacific Highway South Bridge Replacement, Tukwila, Washington Pacific Highway South Bridge Replacement, Tukwila, Washington Pacific Highway South Bridge Replacement, Tukwila, Washington Pacific Highway South Bridge Replacement, Tukwila, Washington

Richmond Beach Bridge Replacement, Shoreline, Washington

ABKJ designed a replacement for a timber bridge that provided the sole access over two BNSF railroad tracks to 27th Avenue NW. The new reinforced concrete girder bridge meets the clearance requirement over the railroad tracks, increases the load limit, and improves sight safety. The design accommodates a future third railroad track for BNSF and Sound Transit.
Richmond Beach Bridge Replacement, Shoreline, Washington Richmond Beach Bridge Replacement, Shoreline, Washington Richmond Beach Bridge Replacement, Shoreline, Washington Richmond Beach Bridge Replacement, Shoreline, Washington

South Park Bridge Approaches, Seattle, Washington

This project constructed a new moveable bridge over the Duwamish Waterway parallel to and down river of the original bridge built in 1931. ABKJ completed the final design and PS&E preparation for the approach structures to the bascule span and the MSE walls for the approach embankments.
South Park Bridge Approaches, Seattle, Washington South Park Bridge Approaches, Seattle, Washington South Park Bridge Approaches, Seattle, Washington South Park Bridge Approaches, Seattle, Washington

SR 509 Cable-Stayed Bridge, Tacoma, Washington

This bridge crosses the Foss Waterway and has spans of 375 feet and 307 feet. ABKJ provided technical consultation to WSDOT throughout design and construction, including conceptual and final design guidance, checking plans and calculations, erection concept design and analysis, construction services, and preparing an operation and maintenance manual.
SR 509 Cable-Stayed Bridge, Tacoma, Washington SR 509 Cable-Stayed Bridge, Tacoma, Washington SR 509 Cable-Stayed Bridge, Tacoma, Washington SR 509 Cable-Stayed Bridge, Tacoma, Washington