Archive for the ‘Engineering’ Category

Link’s next challenge?

Monday, September 6th, 2010

It’s time to declare Link Light Rail “basically on target” for ridership. July’s weekday ridership averaged 24,145 vs. a December projection (page 17) of 26,600 for by mid-2010, and it’s done so during a downturn in both jobs and travel. It’s hard to guess how quickly ridership will rise from here, but it seems plausible that numbers might hit the 26,600 weekday figure by year-end.

Link Light Rail. Photo courtesy of Sound Transit.

It’s a fairly impressive figure, in context. Many rail lines start with more riders, but they usually have higher densities around them, or park-n-rides, or connecting rail lines, or bigger feeder bus systems, or all of the above. Central Link has neither parking (except Tukwila) nor density, and a moderate amount of connecting transit. It doesn’t even get many in-Downtown trips, because it competes with free tunnel buses.

To be honest, I’m relieved. The projections made sense, including the upward trend as the drivers of ridership came into place, like the connecting bus lines. But it was far from certain. Kudos to Sound Transit for being realistic with your ridership projections, much as you’ve been conservative (in the last decade) about project cost projections.

Now my worry isn’t ridership, but limited capacity. Trains can only be two cars long until 2015 (page 96), when use of the stub tunnel on Pine is no longer limited by construction of University Link. Meanwhile, trains can’t run more often at peak times, due to required separation between trains and buses in the Transit Tunnel. There may be no way to grow capacity until 2015.

Anecdotally, I’ve seen peak-time Link trains so full that riders can’t even board. By 2012 or so, we might need measures to decrease ridership a little, like restoring a couple bus routes into Downtown. Or maybe Sound Transit can negotiate some closer proximities between buses and trains with the feds. Or maybe it would help to move some tunnel bus routes to the street, though the bus riders are important too.

Long term, capacity is a huge advantage with rail. Link is built for trains up to four cars long, which by itself would double capacity. Once the buses are out of the tunnel (presumably 2016, when University Link opens), frequencies can be much better. Of course, when University Link opens, the system will also have a lot more turnover on each trip, i.e. a lot of people who go from the ends to Downtown and vice versa, but not as many who travel the whole length. Capacity will be multiples of today’s in 2016, and much higher still in the early 20s when the line hits Lynnwood, Redmond, and Federal Way.

We’ll need that capacity. I’ll skip the half-pager for now, but in brief, this region continues to grow, a lot of jobs and residents are projected to be added around the new and planned Link stations, and it seems unlikely that voters would pass any major increase in road capacity.

On a side note, Link seems to be doing very well as an airport shuttle. When I ride on weekends, it seems like 30-50% of the passengers have luggage. What an improvement in quality of life for tourists! That might strike some people as unimportant, but given that tourists spend billions in Seattle every year, it seems pretty important to me.

Related to that, here’s some constructive criticism about Westlake Station, for the benefit of both tourists and locals: (a) It’s easy to be confused about how to pay. There are several ways to get to the train platform without walking past a ticket machine, and the signage is woefully inadequate, so improve the signage and think about adding ticket machines on the platforms (can anyone explain that one?). (b) The ORCA card readers are only on the mezzanines, not on the platforms, meaning for example that a bus-to-rail transfer requires going upstairs and back down, which again the signage doesn’t adequately explain (and which doesn’t seem to make sense to begin with). (c) Exiting the station is very confusing, as evidenced by the tourists I continually run into asking how to get to the street, sometimes around the elevator in the center of the mezzanine. A few sign poles in the mezzanine, with maps, would solve this problem. (d) There’s no drinking fountain, and no concession. Give us something to drink!

Urban planning Sudan-style

Monday, August 23rd, 2010

Southern Sudan plans to rebuild cities in the region in the shapes of animals and fruit, according to this BBC News report. SeattleScape blogger Mark Hinshaw sees potential there. Here’s what he has to say:

The World Institute for Anthropomorphic Town Planning announced last week that Washington State will be the recipient of six grants to counties for free-standing urban development.  Each county would be required

Courtesy of photobucket.com.
to select an animal – one that is native to the northwest — and then lay out a new town in its shape. WIATP would provide full funding.

“We are excited about this prospect because we know that many legislators have been wanting get rid of the Growth Management Act,” said Keefer Bakelite, Palouse County Commissioner. “Who could possibly object to towns shaped like animals?”

Says Professor William “Willy” Grant of CWU’s urban planning school, “Few people know it, but animals make the ideal shape for communities. Civic uses fit nicely in the head, industry fits in the stomach, housing in the legs. Waste disposal systems go, um, well… near the tail.”

A number of counties are vying for the grant, having already selected the Bighorn Sheep, the Black Bear, the Salmon, and the Geoduck for their own submissions. Palin T. McHall, Executive Director  of the WIATP remarked, “Other counties will have to be extra creative as some of the best animal shapes are already taken.”  “Insects are also eligible,” he adds.

For their part, Futurewise and the Sierra Club are in a political quandary. “We hate free-standing communities. But we all love animals. It’s a true dilemma,” one close source who chose not be identified said.

Personally, I think it would be swell to have a town in look like a cicindela tranqebarica.

Ruining the view from Aurora Bridge

Tuesday, August 17th, 2010

My bus crosses the Aurora Bridge with its wonderful public view of Mount Rainier, the city, the ship canal, the Olympics and Cascades. Since we’re destined to lose our grand aerial view from the Alaskan Way Viaduct, the pending loss of the view from the Aurora Bridge is even more aggravating.

Aurora Bridge lit up. Enhanced photo by Kenji Tachibana

Public viewscapes contribute immeasurably to our civic identity and urban well being. After a long day, the sunset view crossing the bridge is a mental tonic (without the gin!).  The wake up view of sunlight catching fresh snow on the Cascades beats a latte and a vitamin pill as the morning pick-me-up.  Our public viewpoints and corridors contribute to a healthy mental state of mind, as well as aesthetic outlook.  Yet we’re letting WSDOT steal that view, turning the historic structure into a long linear jail cell for the hundreds of thousands of us who use that corridor. How maddening.  Last year I attended the so-called outreach event following a daylong design charette to come up with concepts to suicide proof the bridge.  While the only solution I personally could abide was a simple net structure slung under the bridge, there were other more artful fence concepts presented. Instead we end up with the jail cell look.

So we’re spending $4.6 million, forcing residents of Fremont and Queen Anne to endure months of daytime irritation and sleepless nights while the construction crews drill and rivet and corrupt our bridge so we can possibly deter a small subset of suicide attempts.  But we’re not going to solve the problem of suicide this way and we’re not going to eliminate every hazard to our physical and mental health by such clumsy methods.  If the goal is to spend gas tax dollars to prevent loss of life, there are hundreds of unfunded highway safety projects, railroad grade separations, and drunken driving enforcement actions that would be more effective.

Trying not to be a cynic about the Sheraton facade fix

Friday, August 13th, 2010

As reported in yesterday’s DJC, the Sheraton Hotel is finally going to improve the dreadful blank wall along the western side of 7th Avenue between Pike and Union Streets created by its first and second towers.

While I’m thrilled to hear that this long-awaited improvement scheme has not fallen through the cracks and is scheduled to start next week, it’s taking all my patience not to be cynical about this interesting state of affairs.

As I commented in an opinion piece I wrote on the subject for the DJC on 4/6/09, the big blank wall along 7th Avenue (and parts of both Pike and Union Streets as well) should not have occurred in the first place.  The City’s Downtown zoning code would otherwise require street-level uses and “transparency” (doors and windows that allow both visual and physical access to those activities) along 7th Avenue.  Somehow the Downtown Design Review Board approved a departure from those standards in exchange for wall treatment

Mirrors will be added to the blank wall of the Sheraton to make the streetscape more inviting. Image courtesy of Gustafson Guthrie Nichol.
to create pedestrian interest.

To my mind, there is no more naturally interesting phenomenon as one walks down a city street than interacting – both visually and physically – with a variety of shops, cafés, and other establishments that organically inhabit street-level tenant spaces over the years.

I commend Gustafson Guthrie Nichol for their bold, innovative and, yes, probably very engaging “garden walk.”  In my article, I made a rather glib reference to such an applied treatment being akin to lipstick on a certain porcine animal.  And, as with any maquillage, I fear it will require an inordinate amount of maintenance and continual primping to remain the engaging and interesting street-side phenomenon that they intend.

As for the intended reflection of the Eagles Temple across 7th Avenue, this is an interesting homage to that landmark.  It reminds me of the storied reflection of Trinity Church in the adjacent Hancock Tower’s wall of glass in Boston’s Back Bay. There’s something playful and creative about this approach to a response to the

The western side of Seventh Avenue between Pike and Union streets consists of one uninterrupted, blank concrete facade. Photo by DJC staff.
historic landmark.  Yet I also fear for the long-term viability of the mirrors.

Again, actual street-level tenant space, with doors and windows, could last the lifetime of the building with a changing array of establishments naturally responding to their street-level location with appropriate displays and accessibility.  Yet the placement of mirrors seems so impermanent.  Does the Sheraton Hotel management really intend to maintain and likely replace those mirrors essentially ad perpetuum?

Not to be ever the naysayer, I am anxiously awaiting the unveiling of the 7th Avenue “garden walk” next Spring as it will be a vast improvement over the existing pitiful situation.  And the Gustafson Guthrie Nichol group do marvelous work, so it will be a pleasure, yet again, to interact with their work in our cityscape.

Check out DPD’s construction permit stats

Monday, August 9th, 2010
Courtesy of photobucket.com.
The Seattle Department of Planning and Development has an interesting chart that looks at construction permit turnaround data. The data is updated monthly and can be viewed here.

High-rise fix requires jacking it up

Tuesday, August 3rd, 2010

Downtown Seattle has its  McGuire apartments, 25-story building the owner plans to demolish because it says construction defects are too expensive to fix — a contention the contractor disagrees with.

Sarasota, Fla. has its 15-story Dolphin Tower condo complex, which engineers plan to jack up to fix severe design and construction flaws that have caused a key concrete support to fail, according to a Sarasota Herald Tribune story. Read it here.

Here’s what crossing the 520 bridge will look like

Monday, July 26th, 2010

The Washington State Transportation has posted a video simulation of what traveling across the new Evergreen Point floating bridge will be like. The video comes with some trendy music for your listening enjoyment.

Next month the Washington State Department of Transportation begins its search for a design-build team on a $700 million to $1 billion project to replace the state Route 520 bridge between Seattle and Medina.

The agency will issue a request for qualifications in August and a request for proposals in October. The project is scheduled to finish by December 2014.

Let’s no-go tunnel referendum idea

Wednesday, July 14th, 2010

Opponents of the deep bore tunnel are getting desperate. Now some are proposing a City referendum. Assuming your standpoint is something other than “stop the tunnel at all costs,” this is a ridiculous idea. Without getting into the minutiae, here are a few major flaws in their thinking.

1. It would cause delay, which would increase cost. To ensure top-quality, low-price proposals, WSDOT would presumably postpone the team selection, and much of the public deal finalization would be delayed as well. Even if the referendum resulted in a “go,” this would risk moving the pricing into a period of general economic recovery. As everyone in construction knows, any economic recovery will cause prices to rise substantially due to higher material costs, normalization of margins at every level, etc. The current RFP process is well timed to take advantage of low pricing that we know will last into early next year, but might not last much longer.

2. If opponents were to win, what then? Would it be a simple matter of clarifying Seattle’s exposure to overruns, or would it stop the tunnel concept entirely? Does anyone think that another option would be more popular? Based on who is supporting the referendum, it sounds like the “surface” option is their intended goal. That might play well in some neighborhoods, but it’s the worst nightmare for many of the viaduct’s

The deep bore tunnel being studied as part of the Alaskan Way Viaduct replacement will carry four lanes of traffic under downtown Seattle. Much of the two-mile-long tunnel will go through glacial till, reaching a depth of 220 feet. Image courtesy of WSDOT
current users, much of the business community, and many of us Downtown workers/residents who would see our Downtown avenues turned into pedestrian-unfriendly throughways for drivers who don’t want to be here. Others insist that we’re all insane if we don’t retrofit the viaduct so it’ll last two or three decades longer, or we’re insane if we don’t rebuild a similar viaduct, or the only solution is a bridge in Elliott Bay, or we should revisit the cut-n-cover idea…  Every one of them has a built-in opposition, which I think will be larger than the opposition to the tunnel. Anyone who thinks their pet idea will magically make a majority happy is delusional.

3. It would be a City referendum for a State project that affects the whole metro. I agree that the cost risk should be shared by the State and the City…which currently appears to be the case, barring any future contract language that specifies otherwise. Aside from the issue of Seattle’s risk, there’s the issue of who the viaduct belongs to. Referendum supporters appear to be forgetting that tunnel is a State project, and serves a region-wide traveling public. Do they really think the State will let Seattle delete a regional lifeline? If the tunnel were stopped, the result would be another highway of some kind. Probably an aerial replacement, built a couple years after the current plan during a time of much higher pricing. The no-replacement people would get to look at THAT for the next 60 years, which horrifies me as well.

4. The other concepts have MORE cost risk. In 2008 it could be argued that a tunnel had higher cost risk than an aerial option. Off the cuff, the opposite seems to be true today. The tunnel has gone through a year and a half of intense study, design, and improvement since becoming the chosen option. A replacement viaduct (or any other concept) would start over with very minimal design, very minimal knowledge of what’s under the existing viaduct, and very minimal idea of what would be needed to minimize the considerable construction inconveniences. Further, those who prefer other options typically forget to include the cost of knitting South Lake Union and Lower Queen Anne back together via a lowered Aurora, which would be a much more difficult project in their scenarios, and they leave the current tunnel severely under code. (This is all completely separate from the hidden costs of disruption (during construction and permanently) with the surface, aerial, or cut-n-cover options, which would dwarf the project cost in every instance.)

In another blog post I discussed why the idea that driving will suddenly become unpopular (an idea held by many surface option supporters) is wrong as well. I won’t get into the opponents claims about overruns on past projects, which are based on ancient history rather than the modern practices of agencies like WSDOT, Sound Transit, etc., who have done well in keeping their recent work on budget.

I suspect the referendum won’t happen because smarter heads will prevail. And if it does, it’ll probably lose, because as some old polling suggested, the public’s #1 priority is to get it done, even among many people who consider the tunnel their second or third favorite option. The tunnel is a good plan, which does an excellent job of balancing millions of viewpoints, and is ultimately the lowest-risk concept.

Seattle Children’s uses Toyota-like efficiency practices

Tuesday, July 13th, 2010

The New York Times has an interesting article on how Seattle Children’s hospital is using an efficiency system to help it avoid some capital spending.  Here’s the story.

Creating of a new central waterfront neighborhood

Thursday, July 1st, 2010
The Alaskan Way Viaduct and downtown Seattle. Photo courtesy of Clair Enlow.

Reading Clair Enlow’s very insightful piece in yesterday’s DJC gave me hope.  For too long all I’ve heard about is the proposed new Central Waterfront park that could some day replace the dead zone now created by the Alaskan Way Viaduct.  Don’t get me wrong; parks can be great and we do need more gathering space(s) at the City’s front door, but the thought of a single, long, linear park in that location would send shudders down my spine!

When I read that partnership committee member Mark Reddington stated exactly what I’ve thought all along, my fears started to relent, and hope entered the picture.  “This isn’t just a single space,” he said.  “It really should be a deeply integrated place.”

That’s exactly right. that does three crucial things: 1) knits back together the waterfront and the downtown neighborhoods uphill; 2) creates a new series of microneighborhoods with their own new and exciting character, and finally 3) provides a series of interesting, engaging, diverse, interconnected public spaces.

Stated succinctly, Seattle has not done a good job (yet) with downtown public open spaces. In addition, for some reason the political ethos has not yet warmed to the notion so prevalent elsewhere around the world of a genuine integration of public spaces with other public, semiprivate and private uses to achieve truly urbane spaces.  Just look at Westlake Park versus Westlake Plaza (next to the Westlake Center).  The City’s ludicrous policy of essentially disallowing any private activities (vendor carts, spill out of café tables or sales tables) onto public land leaves that park rather lackluster.  Just across the street, on private land, the smaller Westlake Plaza, complete with its coffee shop, vendor stands and exhibits is often so lively and populated it can actually become crowded. For an important civic space in a major city’s downtown that’s not a bad problem to have!

Can you imagine if that policy were allowed to prevail in the much larger central waterfront public spaces?  Just think of Pier 62/63, where not even a popcorn stand, hotdog vendor or espresso stand can be found in that vast, vacant, yet valuable space.  Yes, the view is lovely there, but imagine how much richer the experience would be if there were some minor services or amenities, together with more movable tables and chairs.

If we can truly shed this mindset and move towards an underlying principle of a genuine integration of public and private spaces, activities and uses, then we will have set the stage for a remarkable central waterfront neighborhood that could become the envy of cities across the country.

The remarks by Cary Moon, Clair Enlow and Mark Reddington are giving me hope. Let’s work with them and support this new vision for the central waterfront.