Alaskan Way Viaduct & vicinity briefing @ City Council: ‘No continued settlement’

(ADDED: Video of this morning’s entire meeting, above)
9:41 AM: Ten days after concerns about “settling” related to the Alaskan Way Viaduct Replacement Project, WSDOT reps are briefing the Seattle City Council right now. Transportation secretary Lynn Peterson says there appears to be “no further settlement” since what was reported a week and a half ago, and no damage to buildings in the area. She says that while this is a “tense moment” in the project, WSDOT firmly believes it’s “less risky” to proceed than to rely on the earthquake-vulnerable Viaduct. She also vows that the contractor, Seattle Tunnel Partners, is being and will be held accountable for what they’re expected to do. And she says they can’t commit to any kind of timeline right now for completion, because the cutter head has to be retrieved for repair first: “This is a design-build contract and we have purchased a tunnel … the fix .. is the responsibility of the contractor. We do not own the machine nor the method” STP chooses to fix it.

WSDOT’s Todd Trepanier tells the council STP was asked to stop excavating, at least temporarily, on Friday, until getting a green light for resumption. He’s getting into more technical points; here’s the slide deck just added to the agenda.

You can watch the briefing live here. After WSDOT reps are done explaining, and answering council questions about, the “settling” situation, city reps are scheduled to talk about the status of plans in place in case a Viaduct closure was needed. We’ll have toplines of that later; you can preview the slide deck (which involves a 2005 plan centered on “what ifs” in case of an earthquake) here, plus a new city update on the “settling” situation here.

11:26 AM: The meeting, originally scheduled for about an hour, has now lasted for two and isn’t likely to end any time soon – again, it’s live at seattlechannel.org. Councilmembers continue to press for more specifics on Viaduct safety – a moment ago, Councilmember Kshama Sawant was asking what size of earthquake would take the AWV down; WSDOT says it doesn’t want to speculate but notes they all believe the structure “is vulnerable.”

11:30 AM: City reps are now coming to the table to discuss the status of plans in case it was determined the Viaduct had to be closed – not just transportation, but utilities.

SDOT director Scott Kubly says the “unified command structure” has been meeting at least once a day to talk about the situation. Seattle Public Utilities says it’s been monitoring utility lines and pipes in the area – they’re using a hydrophone to “acoustically” detect water leaks, as well as using closed-circuit video to watch the sewer lines. The presentation embedded above this paragraph shows all the utility info they’re presenting, including what types of lines are in the Viaduct/tunnel-pit area, as well as the transportation plan that SDOT will discuss shortly.

11:46 AM: Now it’s SDOT director Kubly’s turn, after a council question asking SPU who covers the cost if there are utility problems – answer: the state. Meantime, he says that they are in “good shape” if a Viaduct closure was necessary, because the 2005 plan is updated each year. The “variable message boards” on paths to The Viaduct would be called into action, as would equipment like barricades etc. which he says are “pre-loaded” onto vehicles and ready to go at a moment’s notice, if needed. He is followed by Seattle City Light with its plans. Meantime, the Department of Planning and Development hasn’t heard yet of any buildings that would be deemed unsafe, but if settlement was “a lot steeper in areas,” they have authority to “do various things depending on how much damage we see … (including) ordering vacation of (a) building.”

11:58 AM: Councilmember Tom Rasmussen asks how Metro works into this plan if the Viaduct had to close. Kubly says Metro is “at the table” and they are looking at “how would we speed buses” and “what detour routes would be in place … how (to) add service would depend on length of the closure.” Could the plan deal with all 60,000 people/vehicles that would not be able to use the AWV? Kubly says it would address elements such as possible restrictions on “non-essential construction,” changes in deliveries, and looking at ways to get more people carpooling, using transit, etc. (The funding for extra transit is “already gone,” the council is told.) WSDOT’s Trepanier is asked to come back to the table to answer some questions, such as what if there’s a long-term gap between the Viaduct going out of service and the tunnel coming into service. He says the Legislature made the decision not to use any more project money toward “transportation mitigation” (such as transit).

12:13 PM: The Viaduct discussion is over and the council has moved into a preview of its 2 pm meeting, which will include the White Center annexation proposal. When the video of this meeting is available, we’ll add it to this story.

3:18 PM: Just added the video.

8:18 PM: Mike Lindblom of The Seattle Times (WSB partner) reports on the downtown water main that needs replacement.

22 Replies to "Alaskan Way Viaduct & vicinity briefing @ City Council: 'No continued settlement'"

  • Joe Szilagyi December 15, 2014 (9:50 am)

    “no damage to buildings in the area.”

    Except for ALL the cracks everywhere?

  • joel December 15, 2014 (9:54 am)

    STP….they have a history of prevailing well in lawsuits brought against them on projects……it’s fine for DOT to say they will be accountable but when this ends up in court that will be another story….so now they can’t commit to a timeline…..interesting to see when/if this thing gets digging again what’s going happen in the next 9000 feet plus of the dig….being the first 1,000 feet has not went exactly as planned.

  • iggy December 15, 2014 (10:17 am)

    que sera sera. I didn’t expect them too say anything different given that there is no settling since the last measurements.

  • wetone December 15, 2014 (10:36 am)

    People should be watching the meeting if concerned, going on right now. http://www.seattlechannel.org/live

  • wetone December 15, 2014 (11:07 am)

    Your link in story for viewing meeting does not work. That’s why I posted it.

  • WS Wanderer December 15, 2014 (12:21 pm)

    I could be wrong but I assumed the settling happened over a long period of time. Why should we be happy that no additional settling has happened in the last week?

  • John December 15, 2014 (12:25 pm)

    Joe Szilagyi,
    The actual quote I just heard from Lynn Peterson was, “no structural damage to buildings…”

    The cracks in stucco, brick, plaster et cetera are generally not structural.

    Maybe WSB can clarify?

  • timeslid December 15, 2014 (4:29 pm)

    The question, “Could the plan deal with all 60,000 people/vehicles that would not be able to use the AWV?” is not the right question. Currently over 110,000 car trips is the number WDOT uses. 60,000 trips is the tunnel number with the balance going to Western ave and the surface streets. I hope this is not a reassessment but merely an oversight because that is 50,000 trips difference.

  • planenut December 15, 2014 (5:51 pm)

    John is right. Every street and every old brick building in Pioneer Sq and SODO is built on landfill and have cracks from constant soil shifting and not just a few earthquakes over a hundred years. My house is 110 yrs old and in the 25 yrs we have lived here I have repaired a lot of cracks and it isn’t built on landfill.
    Excellent coverage WSB, thank you.

  • Seattleborn December 15, 2014 (5:57 pm)

    I pray that no one gets hurt or killed in this digging of the tunnel but where they are digging was nothing but a part of Elliott Bay way back when my Dad was a kid and all that land that’s there now was fill from the Denny regrade…my Dad was born 1916 and remembers ice skating down there…so put 2 and 2 together.

  • Seattlite December 15, 2014 (6:15 pm)

    Gosh– It’s really hard to believe anyone (contractors, city council, mayor, governor, etc.) who has anything to do with the tunnel project. Statements are never decisive…always a but…

  • Peter December 15, 2014 (6:21 pm)

    What I don’t get is that this is a known problem, and it is standard practice in tunneling to pressurize the work area to keep the groundwater out. They knew in advance that the amount of pumping they were doing would cause the ground to subside, and they didn’t plan for that because … ?

  • dbf December 15, 2014 (8:17 pm)

    The last big quake was 14 years ago, the area has sunk more rapidly since the tunnel and rescue pit were introduced. A 6.8 didn’t bring it down, this tunnel will. Wishful thinking only goes so far…

  • Eric1 December 15, 2014 (8:43 pm)

    Peter.
    .
    Pressurizing at that depth (the equivalent of 120 feet of water) would require decompression time and added costs to prevent caisson disease. Obviously these guys are doing it “on the cheap”.

  • wetone December 15, 2014 (8:45 pm)

    All I have to say is we’re going to be paying for this tunnel forever. The answers they were giving along with the way they answered made me chuckle many times. Things like if they have or are seeing any building damage they said no, because they have not been monitoring them, but are starting to monitor now. Same for all infrastructure in the area most being over 75yrs. old ……wow…a little late in the game I think. Hard numbers for viaduct movement seam to be changing or what they actually mean are. Can’t tell if WSDOT people think the people their talking to are that gullible or what. What did they think was going to happen when they shake, rattle, roll, pull ground water and dirt out from an old filled in tide flat ? anyone that has gone clam digging or built a sand castle could figure out the outcome. The more WSDOT talks the worse this project looks planned out and run. Glad I have done the Seattle Underground tour as it might be a thing of the past.

  • dsa December 16, 2014 (2:20 am)

    O’Brien did a good, he seems to have his head screwed on right.
    .
    The thing that surprises me most is that they are saying STP contractors are 70% done. Wow, if they have taken 70% percent of the money, they could just fold up shop and go home and let the surety (insurance) finish the job. It wouldn’t be the first time.

    • WSB December 16, 2014 (2:23 am)

      I would have to go back and listen to the meeting again to be 100 percent sure but what I *believe* I heard them say is that the Viaduct Replacement Project – not the tunnel itself – is 70 percent done. Which would include the replacement of the southern mile, as well as the portals, the 1000 feet of tunnel that’s having road decking installed (see our report on the stakeholders’ meeting just before this new settling info blew up), etc.

  • wetone December 16, 2014 (9:59 am)

    70% done with tunnel project is what they said. That did not include tearing the old viaduct down as that’s a different phase. I don’t understand that statement as only 10% of actual tunnel itself is done. I would of thought the tunnel boring being the most difficult and unknown would have been the largest percentage of the job. Very odd the way this job is being explained to the public at best. dsa, first thing I thought also when I heard that 70% done number is now STP has it on record and is either owed or has been paid. Wouldn’t it be interesting if they do enough damage to area buildings, infrastructure that area gets flattened and all replaced ? Sad part is this project was never designed for improving traffic flow in seattle, more of an express way for those that work in south lake union, a very small portion of the people that need to get around this town. It really amazes me how Lynn Peterson and others say this project will get done, shows little respect for the tax payers. I wonder how many of the people involved will retire before project is finished. This whole project stinks and reminds me of the way the lower w/s bridge got replaced….

  • Bruce December 16, 2014 (11:47 am)

    Surprised that SDOT’s Kubly quoted as saying Metro is “at the table” and they are looking at “how would we speed buses” and “what detour routes would be in place … how (to) add service would depend on length of the closure.”
    Would have thought they would plan on moving buses to reserved busway in SODO between 4th and 6th. Not being a specialist, it would seem to be the way to go now to reduce rush hour traffic delays involving the AWV.

    • WSB December 16, 2014 (11:59 am)

      Followup on earlier exchanges – I stand corrected, as they say. I asked Laura Newborn, spokesperson for the Viaduct Replacement Project, to clarify the 70 percent remark, whether it was indeed 70 percent of the tunnel project (and how that broke out) or 70 percent of the full AWV replacement, and she said it was indeed the former: “The tunnel contract includes the tunnel itself along with all the entrances, exits and operations building. The tunnel liners are all manufactured. The bored tunnel portion of the contract is 10% complete, but all the other work is where the 70% complete figure comes from. The tear-down of the viaduct, the decommissioning of the Battery Street Tunnel, the design and construction of a new Alaskan way are all part of the AWV PROGRAM and not included in that 70% figure.” – Tracy

  • dsa December 16, 2014 (12:13 pm)

    8,000 feet is left to tunnel for 10% of the contract. That does not provide much incentive to finish the contract. Except that if I recall correctly in a couple hundred feet more of digging the warranty on Berth expires. So from there on out STP is home free as repairs on it are on WSDOT, er us.

  • dsa December 17, 2014 (12:14 am)

    Excellent June 18, 2014 article from the Stranger.
    I hope this stays up:
    http://www.thestranger.com/seattle/who-to-blame-for-bertha/Content?oid=19894105

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