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Northgate Pedestrian and Bicycle Bridge Project

Last Updated: May 17, 2017

Whats happening now?

After working with the community and stakeholders in 2014 and 2015 on early design, we paused in 2016 to conduct an independent cost validation and found the existing design exceeded the approved budget. In response, we formed a new design team to get a fresh set of eyes and reduce project costs.

In late 2016, a new team was formed to design a bridge within the budget. Design and environmental review have resumed, and we’re now sharing the updated project design!

We’re committed to designing and constructing the bridge within budget, while fulfilling the project’s purpose to create a walking and biking corridor linking Northgate neighborhoods east and west of the interstate. We’re also committed to incorporating the community’s priorities, such as crime-prevention features and accessible connections to nearby walking and biking routes.

The new bridge design includes several cost-saving changes, such as reducing the bridge width, shortening the bridge length, enhancing the user experience with overlooks and more direct lines of sight, and reducing the overall project duration through changes in construction techniques. See below for how the team cut the project cost by half.

Read more about the updated design in our fact sheet!

 

Email is the best way to stay up to date on project progress:
Click here to sign up to receive project email updates

Questions? Contact the project team at NorthgateBridge@seattle.gov

If you need this information translated, please call 206.615.0925

Si necesita traducir esta informacin al espaol, llame al 206.615.0925

如果您需要此信息翻譯成中文 請致電 206.615.0925

Project overview

The Northgate neighborhood is a major residential and employment hub. It’s 1 of 6
“urban centers” identified in Seattle’s Comprehensive Plan. An urban center is a relatively small area expected to accommodate high densities of development for housing and employment.

Northgate is also listed as a regional growth center in the Puget Sound Regional Council’s (PSRC) Vision 2040 regional growth management plan. With the completion of Sound Transit’s Link light rail station to the east of Interstate 5 (I-5) in 2021, the neighborhood is poised to become one of the region’s most active transit hubs.

Connecting communities on the east and west sides of I-5 in Northgate

We’re building a new pedestrian and bike bridge over I-5 in Northgate. The Northgate Ped and Bike Bridge will improve connections between the east and west sides of the Northgate community, helping knit together a neighborhood historically divided by a 10-lane interstate and maximizing the use of transit facilities. The King County Transit Center currently serves over 6,000 passengers a day, and the future light rail station is expected to serve over 15,000 passengers per day.

When complete, the bridge will help connect the neighborhood’s thriving job and retail centers with the rest of the city and region. The project will also connect to nearby walking and biking routes with a multi-use bike and ped path along 1st Ave NE between NE 92nd Street and NE Northgate Way.

The project consists of four main parts:

Related Projects:

Other projects we are coordinating with include:

  • Bridge spans over I-5

  • Western approach between North Seattle College and wetland area, connecting to College Way N and N 100th St

  • Eastern approach between I-5 and 1st Ave NE at NE 100th St, near the King County Transit Center

  • Multi-use path along 1st Ave NE

The project will benefit the area by providing:

  • A new connection over I-5, decreasing travel times for people walking and biking between the 2 sides of the highway

  • Safety improvements and access for people walking and biking throughout the Northgate area

  • Better access to regional transit at the King County Transit Center and future Link light rail station, resulting in increased use of transit facilities

  • Improved connections between the Northgate retail center for its employees and customers and for residents and visitors to other nearby amenities, such as parks and medical and social services

Project Location

Project Location Map

Design Rendering



The user experience walking or biking across the bridge.


A view of the bridge, looking east

Recent cost-saving changes

The design team developed a bridge design that includes the following cost-saving changes and design improvements:

Original Design

Revised Design

20-foot wide walkway on bridge

16-foot wide walkway on bridge

2,100-foot long bridge length

Shortened bridge length to 1,600 feet, also reducing travel time

East approach conflicted with WSDOT Park-and-Ride at 1st Ave NE

East approach modified as it touches down near 1st Ave NE, simplifying the connection and preserving the WSDOT Park-and-Ride lot

West approach included stairs at the North Seattle College, with limited sight distance

West approach modified to improve sight distances and make a more direct connection

Complicated construction approach

Standard construction approach to reduce project duration

Tube/truss design (enclosed)

More open structure and more graceful bridge transition

Finally, an added benefit of the revised design is enhanced user experience with features such as a wetland wildlife overlook and a view of arriving light rail trains at NE 100th St.

What weve heard

Based on community input, we know there is interest in:

  • Minimizing environmental impacts of the bridge by making sure, for example, that the project doesn’t disturb wildlife during construction and ensuring the bridge’s drainage system (for stormwater) is designed to enhance wetlands on the west end

  • Ensuring safety of all bridge travelers

  • Understanding how the project is funded and the cost of the project

  • Connecting the bridge to other infrastructure, including neighborhood bike routes

  • Separating or managing modes of traffic on the bridge

We value the community input provided to date, and we’re continuing to incorporate community goals and priorities into the revised design where feasible.

Schedule

Planning and design will continue through mid-2018. Environmental review is ongoing, with final permitting also complete by mid-2018. We expect construction to begin in 2019 and to be complete in 2020, prior to the opening of the Link light rail station in 2021.

Click to view larger
click on image to view larger

Funding

Weve secured funding from various sources in addition to the voter-approved Move Seattle levy. These include SDOT, Sound Transit, Washington State, and additional local funds.

Get involved

In the year ahead, as we finalize design of the bridge project, you'll have opportunities to learn more about it and provide feedback. Our team will be in the community making presentations, hosting public events, sending information to project neighbors, and hosting pop-up tables at busy public spaces. Email is the best way to stay up to date on the project and to get notifications about outreach events.

Click here to sign up to receive project email updates

Outreach events:

Date

Audience

April 29, 2017, at 1:30 PM

Housing Affordability and Livability Community Open House (sponsored by Dept. of Neighborhoods)
Northgate Community Center

Saturday, May 6, 11 AM-1 PM

King County Metro
Transit Oriented Development Public Meeting
Hampton Inn & Suites, 9550 1st Ave NE

PAST EVENTS

June 22, 2016

North District Council

May 25, 2016, at 4:30 PM

Feet First

May 18, 2016, at 7 PM

Licton Springs Community Council

May 17, 2016, at PM

Victory Heights Community Council

May 16, 2016, at 5:30 PM

North Seattle College (Campus meeting)

May 5, 2016

North Seattle College (students)

October 15, 2015

Public Open House

September 17, 2015

Seattle Design Commission Briefing

August 18, 2015

Seattle Design Commission Subcommittee Meeting

July 29, 2015

Maple Leaf Summer Social

July 15, 2015

North Seattle Chamber of Commerce

June 17, 2015

Licton Springs Community Council

June 17, 2015

Seattle Pedestrian Advisory Board

June 24, 2015

Pinehurst Community Council

May 27, 2015

Northwest District Council Briefing

May 26, 2015

Cascade Bicycle Club: Connect Northgate

May 22, 2015

Seattle Neighborhood Expo

May 12, 2015

Meadowbrook Community Council

May 2015

Seattle Pedestrian Advisory Board

April 29, 2015

Maple Leaf Community Council

April 22, 2015

North Seattle College Earth Day Symposium

October 21, 2014

North Seattle College

September 10, 2014

Public Briefing

June 3, 2014

Open house

March 2014

Sound Transit Open House

February 2014

Seattle Bicycle Advisory Board

February 2014

Seattle Pedestrian Advisory Board

Contact information

Contact the project team: 

Project email:
NorthgateBridge@seattle.gov
Project phone number:
(206) 615-0925

Amanda Tse
Project Manager

Rachel McCaffrey
Outreach Lead

Materials

April 2017 Project Fact Sheet

Previous Design Materials:

October 2015

September 2015Seattle Design Commission Presentation

June 2015 – 2015 TIGER Grant Application

July 2015 – Project Factsheet

October 2014Presentation

September 2014Presentation

August 2014Presentation

June 2014

April 2014TIGER Grant Application  (Not selected. TIGER Grant is a highly competitive federal funding source)

April 2014 - Project Fact Sheet

February 2014 - Presentation

Background Resources

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