The West Connection Bridge. Image: WSDOT
How do you connect a new 6-lane floating bridge to an old 4-lane highway? That’s the challenge for the next phase of 520 construction set to begin next month — the West Connection Bridge. This will be an interim span allowing the new floating bridge to transition to the existing 520 West Approach near Madison Park.
Mowat-American A Joint Venture will build the 1,330-foot-long structure under a $22.1 million contract. Completion is expected late next summer.
WSDOT has carefully planned the 520 replacement project in phases so that each new section will function until future sections are complete. When the new floating bridge opens, it will merge its 6-new-lanes into 4-old-lanes on the Seattle side. This interim West Connection will keep traffic moving until the next phase is complete.
However, the next phase, the West Approach Bridge North (WABN), has for the moment an uncertain future. The House Transportation Budget in April sought to delay WABN’s construction start from 2014 until 2015, or until tolls are implemented across the I-90 floating bridge. The WABN phase has been unpopular in Seattle, as it would continue the new 6-lane corridor all the way to Montlake Blvd with no funding in place to complete the rest of the $1.4 billion project. Given the dire budget situation in Olympia, Seattleites are leary of a bait-and-switch leaving us with even worse traffic in Montlake.
West Connection phase (blue) with the future WABN phase (orange). Image: WSDOT
The fate of WABN will be settled just as soon as a budget deal is decided in Olympia (next week?). And while the West Connection is expected to finish next summer, delays with the floating bridge pontoons may push its completion into 2015.
To learn more about the project and its parts and pieces, you can talk directly with WSDOT folks at a series of public outreach events in Seattle next week:
- West side drop-in event: 5-7 p.m., Monday, June 24 — Montlake Branch, Seattle Public Library, 2401 24th Avenue East
- West Connection Bridge Project pre-construction meeting: 4:30-7 p.m., Wednesday, June 26 — Madison Park Pioneer Hall. 1642 43rd Avenue East
- West side drop-in event: 12-2 p.m., Thursday, June 27 — U.W. Magnuson Health Sciences Center, Rotunda Foyer, 1959 Northeast Pacific Street