
The Alaskan Way Viaduct is a three story barrier, separating Seattle from its historic waterfront.
Continuing the thread started yesterday on urban freeways and the CNU Teardown Survey, we have a guest blogger today. Cary Moon is the co-founder and director of the People’s Waterfront Coalition, which is a grassroots group that formed a few years ago to support alternatives to the viaduct that result in a more livable Seattle.
The alternative proposal that the Coalition came up with was widely praised, winning 2nd prize in Metropolis Magazine’s 2005 Next Generation: Big Idea national design competition, and was featured on a PBS doc called Edens Lost and Found. Learn more at the People’s Waterfront Coalition, and nominate your urban freeway today. Enjoy – SGA.
Seattle’s new shore
By Cary Moon, People’s Waterfront Coalition
Like many waterfront cities, Seattle has lived with an elevated highway along the water’s edge for the past 50 years. Back in 1953, a mod new highway — Seattle’s first — probably made sense; the land was already trashed by abandoned rail lines, most of the decaying piers were headed toward industrial obsolescence, and the action was all in the suburbs. Over the decades, forward-thinking architects would periodically suggest the Alaskan Way Viaduct be torn down, but never got any traction.
Then, in 2001, an earthquake just strong enough to damage the viaduct struck. (But not strong enough to damage it beyond use.) The state highway department rallied, and set to designing a bigger highway, citing their usual justifications: The City is growing! We need to prepare for more cars! We must expand capacity! Because they were willing to hide the central 12 blocks underground in a tunnel, civic leaders thought this was a pretty good deal, and went for it.
However, there were fatal flaws from the get-go. Seattle watched nervously as Boston’s Big-Dig was wrapping up, the cost continuing to balloon far beyond the initial estimates. The proposed partially tunneled highway was estimated to cost $4 billion to $6 billion (depending on how you count), already well over the state budget allocation of $2.8 billion. Other funding was scarce.
While the tunnel lid covered up what people would rather not look at for 12 blocks, the structure elsewhere would be 2- 3 times the size of the current highway. Progressive transportation gurus in other cities were tearing down highways; why was Seattle still stuck in the 50s mindset? Then there was Seattle’s much vaunted commitment to reducing global warming pollution; could environmental leaders really be that blind to the chasm between expanding highways and reducing emissions?
In 2004, a group of citizen activists and design / planning professionals formed the People’s Waterfront Coalition to fight the new highway. After participating as individuals in the early days of the WS-DOT sponsored planning process, we quickly realized the State was ignoring 30 years of innovation in urban transportation planning and most of Seattle’s civic and environmental goals in their unwavering intention to build a bigger highway. Our organization, populist and grassroots, was formed to build awareness and support for a more sustainable, progressive, urban transportation solution. Seattle has a tradition of great ideas coming from outside the system through citizen-based advocacy. We saw this as the most viable model for action.
Armed with a vision for what a reclaimed waterfront could look like, a broad proposal for how traffic could still flow without the highway, case studies of teardown success stories elsewhere, and a long list of community and economic benefits, we started making the pitch wherever we could. In those days, we were generally dismissed as naïve, advised not to bother fighting the highway department, and encouraged to please shut up.
In 2005, the Congress for the New Urbanism and Center for Neighborhood Technology found us, and promptly turbo-charged our effort with coaching and creative resources. John Norquist of CNU and Scott Bernstein of CNT spoke with local elected leaders, presented their teardown success stories at local forums, and even funded the brainiacs at Smart Mobility to disassemble the dubious logic in the highway department’s technical work.
As more flaws were revealed with the highway proposals, more leaders started considering our solution as a potential Plan B. In March of 2007, a stubborn political standoff between the City (pushing for the more expensive partial tunnel) and State (pushing for the slightly cheaper but awfully ugly elevated) culminated in a public vote. The result: No and Hell No. “There will be no highway on our central waterfront,” Mayor Greg Nickels declared.

Tearing down the Viaduct could help reconnect the city to the waterfront, also helping the city meet their ambitious greenspace goals.
In these past 10 months since the vote, the political logjam has broken free. The project goals were broadened, focusing on local mobility and accessibility instead of highway capacity. City, County and State agencies are working together instead of at cross-purposes; the state highway department is listening to local interests. Fantastic consultants are now on the job, led by Nelson Nygaard and Glatting Jackson, national leaders in urban transportation systems.
Local civic and environmental groups have joined together to keep leaders on track. Mayor Nickels, King County Executive Ron Sims, and Governor Chris Gregoire all understand that meeting their goals of reducing global warming emissions means reducing car trips by providing better alternatives. The new planning work underway now will identify a solution within about 6-8 months, and it’s pretty clear that it will not be a new highway. We anticipate some mix of transit expansion, demand management, pricing and policy changes, street connectivity improvements, smart traffic management, freight priority routes, and a regular urban street on the waterfront.
State highway departments still seem organized around perpetuating the 1950s suburban dream: more highways, more sprawl, more car-dependent development, more cars, more highways — and on and on. Seattle’s future vision moved away from that dream, but state bureaucracies and their funding streams have not yet.
Every teardown success story finds its own mix of active ingredients. Our group and our early allies pushed on a lot of levers till we found the ones that connected. Pointing out the high cost and risk of urban megaprojects — and the looming specter of the Big Dig overruns — worked. Offering a plausible transportation alternative, even if only broad-brush, addressed the incredulity of removing capacity. Showing multiple diverse successful case studies of teardowns convinced people the highway department’s predictions of chaos and gridlock might be wildly wrong.
Our cool renderings of a highway free shore trumped whatever images the highway department could produce. And our particular ace in the hole was this: to reconstruct a highway, the viaduct would have to be taken out of commission for 3-7 years anyway, during which time Seattleites would surely have figured out how to get by without. So why, exactly, do we need to replace it? That always made steam come out their ears.
Transportation investments should serve the City’s future vision, not drive it.
Seattle aspires to be a livable and sustainable city, so it needs a well-connected and efficient street grid, great transit, biking facilities, and compact walkable neighborhoods. If Seattle can get the highway department to support this local vision, it could prove that a tipping point is upon us, and the age of highway expansion is closing. We’ll keep you posted.
Cary Moon is the director of the People’s Waterfront Coalition. She has a BS in engineering from the University of Michigan, and a Masters in Landscape Architecture and Certificate in Urban Design from the University of Pennsylvania. PHOTOS courtesy of the People’s Waterfront Coalition





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The issue is one of growth, flows, and the shape and layout of Seattle. There are but 7 streets in downtown Seattle that run the lenght of the downtown. That is why we spent a half billion to create an eighth one underground for our transit system.
100 years ago, our city engineer faced the basicly the same issues. Overlooked in the hard and fast stands taken by many parties involved, I think the most pragmatic potential solution has been overlooked.
Rather than replicate the current route, l would implore that all parties review R.H. Thompson’s solution still used by used with great success by the Great Northern railroad, and still used by it’s successor today.
The idea starts at the north end of the current Battery Street Tunnel.
Where SR 99 turn west to enter the Battery Street Tunnel, begin digging a tunnel due SOUTH from that point. The Incline would begin at the current highway level, and drill down to the level of the BNSF tunnel, as this new tunnel followed directly under the exsisting surface streets SOUTH under 6th to Westlake, then deeper still south under about 5th. You keep digging down as you go to get under the current Metro bus/light rail tunnel, then level out and pop out EAST of the existing BNSF Rail Tunnel near Main Street, between 4th and 6th Avenue.
You would build two main tunnels, 3 lanes wide each with a third service tunnel between… by following under the streets, there is no domain issues.
Exit out on the Metro Bus only lane… or east of it… and parallel with sixth avenue.
Then build exit on ramps:
-One funnels back on to I-5 south,
-One funnels east to join I-90 eastbound
-One continues on to Spokane Street or angles across the industrial area to East Marginal Way
-One last ramp that funnels into the parking for the stadium area.
When tunnel and ramps are done, then break through the wall at the Battery Street Tunnel and connect the existing 99 to the new tunnel under Seattle.
The remaining Battery Street tunnel is converted into an on and off ramp that feeds back around to the waterfront, or betteryeat, a direct ramp for Piers 90 and 91 access via Western and Elliott to get to the new ship piers, and expidite interbay traffic.
ONLY THEN do you and tear down the viaduct.
• You loose the Seneca ramp, and Western Northbound, and the 1st Ave ramp southbound… but you gain faster and direct access to I-5, and you don’t have to shut down the existing viaduct for a long period of time in order to build it.
• The port gets the land adjacent to the piers from 36 south… BNSF and the port can now load ships direct to rail. Old 99 could be moved parallel to First Avenue, and reconnect with the new diversion between Lander and Spokane Street.
• The viaduct can be carefully removed, parts retained for viewing and concert platforms… and the sea wall can be replaced a block at a time to keep the waterfront working and functional…
• Best of all, Seattle gains the waterfront for parks, parking, street cars, etc, as well as a much faster second north south arterial, whose clogs bypass the city, the port gets a very efficient way to move containers.
MY guess is that this tunnel in THIS location would be far cheaper to build than anywhere along the waterfront.
Greg, I believe we already had this possibility (or something like it) and it failed. Miserably. This is a terrible idea because it totally obscures the whole point of destroying the viaduct in the first place.
Demolishing a major highway is a way of a making a statement. It is a pledge to reduce our personal vehicle use and start being smarter about our travel throughout the city.
Plus, your idea is INSANELY expensive. Build a SECOND tunnel through downtown. Hmmm, here’s a concept, why dont we just start USING the one thats already there. Take the bus. Take light rail (in a few years). If we get people to do that I think we can save the money from the tunnel and pump it into making that waterfront beautiful.
“The viaduct can be carefully removed, parts retained for viewing and concert platforms”
THAT is a great idea though. I would love for them to keep sections of the Viaduct intact, for example, the off-ramp at 1st and Spring. How awesome of a viewing spot would that be.
If we are even going to discuss new tunnels, what I find striking is just how separated the decision-making processes are for the Viaduct replacement and for Sound Transit’s (our regional transit agency) plans for expanding regional light rail service. It’s a classic case of public investment and bureaucratic silos that are just now clunkily beginning to consider alternative strategies to status quo transportation planning. There are mild reforms – bureaucratic reforms – that the state has been considering for sometime that are also at the heart of this major transportation decision – and the sooner Olympia can beef up and act on these reforms – the better.
If there was a truly integrated decision-making process, than the state, King County, Seattle, and the multi-county Sound Transit would all be considering a plan together – and perhaps including big land use decision-makers like those involved with rezoning South Lake Union and Interbay, developing affordable TOD housing In Ballard and at Convention Place and Yesler Terrace, and the Seattle Center.
In this dream world, I believe, the only tunnel expansion planning for downtown would be for the existing 3rd Ave transit tunnel – sending a tunnel north/northwest from Westlake. Greg’s idea of linking the SR 99 and Battery Street Tunnel to a downtown tunnel is a good one – it just shouldn’t involve more car capacity.
More car capacity in a tunnel means more benefit for more people within a given developed footprint.
More tunnels cost more $$$- something that our current Pentagon economy hates, with people as Cary Moon being the distracting elements.
Get a job delivering using a stick shift.
we could switch to cannabis fuels and reduce emmisions by 80 percent.
Moon wants retail sales and sales taxes she doesn’t care about saving a whale she wants gridlock for revenue at the expense of everyone.
Horsehockey
Was that a long-form Haiku or something? Hilarious!