Duportail Bridge

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 ** Duportail Bridge - Notice of Award**

Phase 1 of the Duportail Bridge project has been awarded to Apollo, Inc of Kennewick, WA!!


Project Information

The Duportail Bridge is the final segment in the Duportail / Stevens Corridor strategy to provide improved multi-modal connectivity between central Richland and the Queensgate area.

Phase 1 will construct the bridge, which will include two vehicle travel lanes in each direction, with bicycle lanes and sidewalks on each side. Tanglewood Drive will connect Duportail Street to the residential developments to the north and the south. The intersection of Duportail Street and Tanglewood Drive will be controlled by a traffic signal. The project will also replace a water supply pipeline, currently located in the Yakima River, with two bridge-mounted pipelines.

Phase 2 will address intersection of Duportail Street and SR240, which will be widened and improved, as will the at-grade railroad crossing on the Port of Benton Railroad.

Jeffrey Peters, P.E.
Transportation & Development Manager
Phone: (509) 942-7500


Washington State’s Connecting Washington legislation, signed by Governor Inslee in 2015, provides $20,000,000 toward the project beginning in July, 2017. As of the summer of 2017, the funding package is complete as illustrated in the table below:

Funding Source


State Connecting Washington Program


State Transportation Improvement Board


State Connecting Washington Program – SR240


Federal – various awards


City – pre-2016 investments


City – Transportation Benefit District





In addition to the above funding for the roads and bridge, the City will also invest $7.25 million in water pipelines to improve the reliability and security of its water system.  Of the $7.25 million,  $1,993,000 will come from a Federal Emergency Management Agency grant and $5,259,949 will come from City Water Utility Funds.

The Transportation Benefit District and Water Utility Funds will be in the form of bond proceeds that will require annual debt payments.


The City intends to begin construction early 2018 and open the bridge to traffic in the summer of 2020.  The construction process is arranged around limited opportunities to do construction work in the Yakima River.  The limitations are imposed for fish passage reasons by federal agencies.

Project Benefits

The Duportail Bridge, as the final segment in the Duportail / Stevens Corridor strategy, will deliver many benefits to Tri-Cities’ travelers and Richland residents.  These include:

  1. Congestion Relief
  2. Traffic Safety
  3. Improved access to jobs and commerce in central Richland and the Queensgate Area
  4. Pedestrian and Bicycle Connectivity
  5. Improved Transit Service
  6. Improved Emergency Response
  7. Improved water supply security
  8. Improved access and management of Yakima River natural open space


Artistic Architectural Elements

Recommendations for incorporating artistic elements into the design of the Duportail Bridge can be found here.

Environmental Review Documents

The Federal Highway Administration issued a Finding of No Significant Impact for the Duportail Street Bridge project on May 29, 2013.  The Federal Emergency Management Agency issued a Finding of No Significant Impact for the project on May 16, 2013.  The U.S. Army Corps of Engineers issued a Finding of No Significant Impact for the project on June 20, 2014.

These findings were based on evaluation of the Environmental Assessment (EA) as issued March 3, 2013, and consideration of public comments during the comment period from March 3, 2013 through April 3, 2013. The public comment period included a public hearing on March 21, 2013.

Here are Electronic copies of the EA and FONSI. Printed copies are available at Richland City Hall and the Richland Public Library. Paper copies can be purchased for the cost of printing. The EA was based on a very thorough review documented in the following special studies.

Additional Environmental Reports

July 2010 - Noise Report
Sep 2010 - Geology & Soils Report
Sep 2010 - Wetland Study Area Determination
Mar 2011 - Land Use Discipline Report
Oct 2011 - Aquatic Resources, Wildlife, and Vegetation Discipline Report
Oct 2011 - Environmental Justice Discipline Report
Oct 2011 - Floodplain Discipline Report
Oct 2011 - Public Services and Utilities Discipline Report
Oct 2011 - Surface Water Discipline Report
Oct 2011 - Visual Impacts Discipline Report
Nov 2011 - Transportation Discipline Report

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