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Hayden Island Interchange
Hayden Island Interchange design recommendation sent to governors
In early 2010, CRC began working with members of the community and agency
partners to review the design of the Hayden Island interchange. After several
months of work by the Integrated Project Sponsors Council Staff (IPS) and input
from the community, the Project Sponsors Council unanimously agreed on a set of
recommendations that included a redesigned Hayden Island interchange.
Governors John Kitzhaber and Chris Gregoire concurred with these refinements and
directed staff to include them in the project’s design.
Collaborative process addressed concerns about original design for Hayden Island Interchange
Concerns were raised about the lack of local access to Hayden Island, the
overhead structures and elevation at Tomahawk Island Drive, and overall
footprint of the interchange on the island. IPS began by drafting concepts for a refined “on-island” Hayden Island interchange
while retaining all basic traffic movements and operations presented in the
Locally Preferred Alternative (LPA). At the same time, several concepts for an
“off-island” interchange were developed and considered. The
Hayden Island Design Group (HIDG) was also convened with local residents and
businesses to incorporate their
perspectives. The HIDG met up to twice
weekly to discuss evolving design concepts. Feedback from the HIDG was provided
to the work group and IPS to inform these ongoing discussions.
HIDG found that Concept D provides the best
balance of access to Hayden Island, freight mobility,
environmental and community benefits and project
costs. "Option A" in the Final Environmental Impact Statement. Click the image above to view a PDF of all the
concepts HIDG considered.
Public process contributed to interchange
design refinement
Three public meetings were held to share the evolving concepts with the
broader community. Throughout the process, both operational issues and community
impacts were considered. One concept emerged as a distinct design
that could address many of the concerns expressed regarding previous concepts.
An evaluation found the new design ("Concept D") balances access to Hayden
Island, freight mobility, environmental and community benefits and project
costs. Concept D carries a consensus recommendation from project partners,
Hayden Island residents and other stakeholders involved throughout the process.
Concept D is referred to as "Option A" in the Final Environmental Impact
Statement.
New Hayden Island Interchange chosen
Concept D/Option A provides the following: Arterial access via the Marine Drive interchange has been removed,
resulting in fewer overhead ramp structures over the island. Local access
to/from the island will instead be accommodated by a local bridge to the west of
I-5, along with the structure carrying light rail. In addition, the elevation of
the community connector street, Tomahawk Island Drive, was raised in response to
community concerns about a tunnel-like feel.
Moving forward
As CRC moves toward construction, the following project design elements
related to the Hayden Island interchange will continue to be refined:
- Pedestrian and bicycle path designs
- Light rail extension and transit station
- Local bridge between North Portland and Hayden Island
- Access management
- Stormwater quality design