Bridge Projects


The University District Gateway Bridge - Spokane, washington

Description

The University District Gateway Bridge forms a direct connection for pedestrians between Washington State University's Spokane campus and the emerging South University neighborhood, crossing an arterial and BNSF railroad tracks. Knitting together these two urban communities, which have different characters and histories, spurs much-needed economic growth on the south side of the tracks and links the university with housing and retail opportunities.


The high visibility of the bridge from surrounding neighborhoods presents the opportunity to create a community landmark and symbol of urban revitalization. Through stakeholder and community meetings, a cable-stay bridge design was selected, forming a dramatic tower arch and allowing the most open air pedestrian experience. The deck of the suspension bridge is supported by cables which hang from the 120’ tall arch.

General information

  • Martin Luther King Way, Spokane, Wa.

  • Type: Pedestrian Bridge

  • Completed: 2018

technical details

  • Height: 135 ft.

  • Total Bridge Length: 450 feet

design & Construction

  • Owner: Yakima County Public Works

  • Developer: Yakima County Public Works

  • Architect: LMN Architects

  • Engineer: KPFF

  • Contractor: Cascade Bridge

  • Steel Fabricator: Fought & Company

 

sauvie island Bridge - portland, oregon

Description

The Sauvie Island Bridge crosses the Multnomah Channel of the Willamette River near Portland, Oregon. The original Parker Truss bridge, built in 1950 with a 200-foot main span, was replaced with a tied arch bridge with a 360 foot span in 2008 due to cracks discovered in 2001.

Early designs for a new bridge were submitted in July 2004, and groundbreaking was held on January 4, 2006. Located at river mile three, the main span is 360 feet long and rests 80 feet above the water. The main span is of a tied arch design constructed of steel, while the approach spans are a box-girder style using pre-stressed concrete. The bridge has two lanes of traffic with shoulders and sidewalks on both sides for a total width of 66 feet. The bridge was floated into place after it was constructed.

The $43 million new bridge opened June 23, 2008. The old bridge was removed in August 2008.

General information

  • Location: Sauvie Island, Portland, Oregon

  • Type: Vehicle / Pedestrian Bridge

  • Completed: 2016

technical details

  • Height: 80 feet (Above the Water)

  • Main Span: 360 feet

  • Total Length: 1,198 feet

  • Width: 66 feet

design & Construction

  • Owner: Multnomah County

  • Developer: Multnomah County

  • Architect: H2L2 Architecture

  • Engineer: David Evans & Associates

  • Contractor: Max J. Kuney Company

  • Steel Fabricator: Fought & Company

 
 

Alsea Bay Bridge - Waldport, Oregon

Description

There have been two bridges on this site. The first bridge was designed by Conde McCullough and opened in 1936. It was a 3,011 feet long, reinforced-concrete combination deck and through arch bridge built in 1936.

The hostile environment caused significant corrosion to the old steel reinforcements. In 1972 the Oregon Department of Transportation began projects aimed at extending the life of the bridge. By the mid-1980s it was decided to replace the bridge rather than continuing costly rehabilitation efforts. The first bridge was demolished in 1991. Construction of the second bridge, designed by HNTB, began in 1988, and it was opened in the fall of 1991 at a cost of $42.4 million. The bridge is 2,910 ft (890 m) in total length, with a 450 ft. main span that provides 70 ft. of vertical clearance. The bridge has a latex concrete deck and the piers are significantly thicker than normal in an attempt to thwart corrosion. The current bridge's life expectancy is 75 to 100 years.

General information

  • Location: Alsea Bay, Waldport, Oregon

  • Type: Vehicle / Pedestrian Bridge

  • Completed: 1991

technical details

  • Design: Concrete / Steel Arch Bridge

  • Total Length: 2,910 feet

  • Longest Span: 450 feet

  • Height: 70 ft. Above Alsea Bay

design & Construction

  • Owner: Oregon Department of Transportation

  • Architect: HNTB Corporation

  • Engineer: Walter J. Hart

  • Contractor: General Construction Co.

  • Steel Fabricator: Fought & Company

 

10th Avenue Bridge - vancouver, washington

Description

This two lane steel bridge will span the gap above Whipple Creek. The project calls for one travel lane going in each direction, bicycle lanes, and storm water treatment facilities. The bridge will enhance traffic circulation and make it easier for emergency responders.

The 10th Ave Bridge was designed with longevity in mind. Whipple Creek has sensitive environmental species so the designers envisioned a project that would leave the area untouched after its completion

General information

  • Location: Northeast 10th Avenue, Vancouver, Wa.

  • Type: Vehicle / Pedestrian Bridge

  • Completed: fall 2018

technical details

  • Height: 48 ft. Above Whipple Creek

  • Length: 350 feet

  • Design: Concrete / Steel

design & Construction

  • Owner: Clark County Public Works

  • Engineer: Cascade Bridge, LLC

  • Contractor: Cascade Bridge, LLC

  • Steel Fabricator: Fought & Company