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chunhimlai
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Updated: Seattle/Tacoma Area 2nd New Airport (SeaTac Reliever/Replacement)

Tue Oct 02, 2018 11:02 am

SeaTac Airport is one of the fastest growing airport in USA.
It is not only the the fastest growing hub for Delta , but also a new pacific gateway after the constraint LAX and SFO

However current SEA is limited in terms of airside and landsize , current runways and terminal cannot fulfill the future growth of pax demand abd there is no room to expand the airport as strong oppoition from resident living nearby.

Therefore the only solution is to built a new airport in Vashon Island. 4 runways allow 4 independent approach and max 200 movement per hour or 1million per year.

Two group of terminals buildings are built for AS and partners AND ST and other airlines. In early phase each terminal can support 25million pax, and allow to expand upto 100million for each terminal. The terminals and satellites builind are built in cross shape to minimize taxing time and improve retail revenue.

Bewteen runway 2 and 3 there are support facility and maintenance base; cargo terminal will be built on the notth part which support up to 10 million tons of cargo. In the southern part there are business park and transport centre to support the airport business.

In order to connect the airport, 3 tunnels (red colour line) will be built from Vashon island to Tacoma and Des Moines and Seattle
Image
Last edited by SQ22 on Sun Feb 03, 2019 3:54 pm, edited 1 time in total.
Reason: Threads merged, title updated
 
BravoOne
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:09 am

Not in a million years will this ever happen.
 
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OzarkD9S
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:11 am

Please stop.
Finally headed to DORKFEST! Sept 7, STL-LAX-PHX-STL. :cloudnine:
 
KICT
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:19 am

Just eminent domain & bulldoze the land in McMicken Heights and be done with it.
People are saying. Believe me.
 
Moosefire
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:23 am

“The only solution”ha!
MD-11F/C-17A Pilot
 
Noise
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:29 am

Just rearrange the runways at SEA and rebuild the terminal as a midfield terminal between the newly rearranged runways and it SEA will be fine for decades.
 
Samrnpage
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:37 am

Someones got too much time on their hands....
 
lavalampluva
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:53 am

What an eyesore. And TBH it's a bit of overkill. The Puget Sound will lose all scenic beauty. :cry:
Remind me to send a thank you note to Mr. Boeing.
 
SEA
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:57 am

LOL! The amount of money that this would cost would absolutely be obscene. I would imagine into the low hundreds of billions.
 
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chunhimlai
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:02 pm

Noise wrote:
Just rearrange the runways at SEA and rebuild the terminal as a midfield terminal between the newly rearranged runways and it SEA will be fine for decades.


How about 20-30years later?

Gap between runway 16L/34R and route 99 is 1.5km only
The area there is only enough to build a terminal for 55-65million pax like changi

On the other hand SEA pax traffic grows half in 15 years, after 20years there will be more than 80m pax
 
cschleic
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:13 pm

KICT wrote:
Just eminent domain & bulldoze the land in McMicken Heights and be done with it.


Just moving the parking garage across Pacific Highway would free up a ton of space to redo the terminal layout.
 
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chunhimlai
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:15 pm

SEA wrote:
LOL! The amount of money that this would cost would absolutely be obscene. I would imagine into the low hundreds of billions.


It cost not more than 90billion even when road and other thing take into account and in very bad situation.On the other hand it cost $4billion to upgrade SeaTac facilities into industrial standard
 
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chunhimlai
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:24 pm

cschleic wrote:
KICT wrote:
Just eminent domain & bulldoze the land in McMicken Heights and be done with it.


Just moving the parking garage across Pacific Highway would free up a ton of space to redo the terminal layout.


The area between pacific highway and Des Moines memorial road is aroung 8.5km2 , just 2/3 of LHR or LAX
 
cschleic
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:34 pm

chunhimlai wrote:
Noise wrote:
Just rearrange the runways at SEA and rebuild the terminal as a midfield terminal between the newly rearranged runways and it SEA will be fine for decades.


How about 20-30years later?

Gap between runway 16L/34R and route 99 is 1.5km only
The area there is only enough to build a terminal for 55-65million pax like changi

On the other hand SEA pax traffic grows half in 15 years, after 20years there will be more than 80m pax


Traffic grows by 50% in 15 years? That's more than 8% / year. No economy can sustain that over the long term. Such a plan to level an entire island won't happen in Seattle or this country.
 
frmrCapCadet
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:39 pm

Actually another 10 miles to the west is the Bremerton Airport. At this time the port controls a few square miles, and forestry most of the rest. The big problem is how do you get from the Seattle area to the Kitsap peninnsula? Vashon Island is less than a mile off the Kitsap peninnsula. I think the Port of Bremerton (and Seattle/Tacoma) ought to get dibs on some of that forestry land to preserve a future site. I also don't think it will ever be used, but it is the only place within 20 miles of Seattle that is vacant and level.
Buffet: the airline business...has eaten up capital...like..no other (business)
 
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NYPECO
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:51 pm

That is completely unnecessary.
 
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chunhimlai
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 12:51 pm

cschleic wrote:
chunhimlai wrote:
Noise wrote:
Just rearrange the runways at SEA and rebuild the terminal as a midfield terminal between the newly rearranged runways and it SEA will be fine for decades.


How about 20-30years later?

Gap between runway 16L/34R and route 99 is 1.5km only
The area there is only enough to build a terminal for 55-65million pax like changi

On the other hand SEA pax traffic grows half in 15 years, after 20years there will be more than 80m pax


Traffic grows by 50% in 15 years? That's more than 8% / year. No economy can sustain that over the long term. Such a plan to level an entire island won't happen in Seattle or this country.


It is 2.7% per year , not 8%
 
cschleic
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 1:01 pm

chunhimlai wrote:
cschleic wrote:
chunhimlai wrote:

How about 20-30years later?

Gap between runway 16L/34R and route 99 is 1.5km only
The area there is only enough to build a terminal for 55-65million pax like changi

On the other hand SEA pax traffic grows half in 15 years, after 20years there will be more than 80m pax


Traffic grows by 50% in 15 years? That's more than 8% / year. No economy can sustain that over the long term. Such a plan to level an entire island won't happen in Seattle or this country.


It is 2.7% per year , not 8%


Too true, and too early in the morning, fat fingered it on the calculator.

Overall, the cost and land use issues would be too much.
 
Themotionman
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 1:27 pm

No thanks... I don't want any planes flying over my head.

Also, Surely the Puget Sound is too deep for a tunnel.
 
GalaxyFlyer
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 1:58 pm

In the Land of Environmental Jackboots in Sandals?

GF
 
Sancho99504
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 2:06 pm

How hard would it be to convince FX to move up to BFI? Maybe include a financial incentive to get them to move? If that can happen, then you could feasibly get DL and AS to move their hangars up north, extend A concourse down and around or build an entirely new concourse down there?
With some creativity and patience, SEA can be rebuilt into an airport of the future that could handle 60+ million people.
kill 'em all and let God sort 'em out-USMC
 
airbazar
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 2:07 pm

Since we're just asking, why stop at only 4 runways? Look at all that wasted blue space around the island. Fill it in, make it 6 runways at least, and you'll save a ton of money by not having to build tunnels. Tunnels are really expensive you know.
 
PlanesNTrains
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 2:10 pm

There are other more reasonable options first. McChord, Bremerton Airport, that site out in rural Pierce County, Paine Field, Moses Lake with a high speed train Seattle-Spokane, etc. Vashon Island will only happen if the people had no voice.
-Dave


MAX’d out on MAX threads. If you are starting a thread, and it’s about the MAX - stop. There’s already a thread that covers it.
 
Sancho99504
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 2:11 pm

Themotionman wrote:
No thanks... I don't want any planes flying over my head.

Also, Surely the Puget Sound is too deep for a tunnel.


I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.
kill 'em all and let God sort 'em out-USMC
 
dgaitan240
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 2:27 pm

Good lord, don't entertain OP. This whole thing is in one word, ridiculous.
 
frmrCapCadet
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 3:09 pm

What is not ridiculous is that the Seattle metro area already needs more room than SeaTac can provide. It is an amazingly compact airport. All of the alternate sites are unacceptable for a variety of reasons.

Sherlock Holmes. How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth? This eventually will apply for Seattle metro aviation.
Buffet: the airline business...has eaten up capital...like..no other (business)
 
jplatts
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 3:26 pm

A 3rd commercial airport in the Seattle/Tacoma area could be built near Buckley and Enumclaw. It will certainly be cheaper to build a new commercial airport in the Buckley/Enumclaw area than it would be to build a new commercial airport on Vashon Island. In addition, an new airport in the Buckley/Enumclaw area would be located on the mainland, and there would also certainly be road access to such an airport from Seattle, Tacoma, and the Kitsap Peninsula if such an airport gets constructed.
 
mham001
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 3:37 pm

As if Vashon Island residents would just walk away when Seatac residents wouldn't..
 
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modernArt
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 3:54 pm

Sancho99504 wrote:
I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.


Perhaps you should research the average depths of Mobile and Chesapeake Bays versus that of Puget Sound.
 
blockski
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 3:57 pm

Sancho99504 wrote:
Themotionman wrote:
No thanks... I don't want any planes flying over my head.

Also, Surely the Puget Sound is too deep for a tunnel.


I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.


No, they likely didn’t, because both the Chesapeake Bay and Mobile Bay are quite shallow, relatively speaking. You can look at the charts.

Puget Sound is over 100 feet deep around the northern tip of Vashon Island. Here’s the chart: http://www.charts.noaa.gov/OnLineViewer/18440.shtml

The Mobile Bay tunnel is only deep enough for a 40 foot deep ship channel above, and the Chesapeake Bay shipping lanes are only a bit deeper than that.

None of that makes a tunnel impossible, just implausible.
 
717atOGG
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 5:06 pm

As has been mentioned before, Vashon Island isn't an option because of NIMBYs, so that leaves us with a few other possibilities. Technically it's plausible for a gate at PAE to be split into two RJ gates, but any major expansion of the terminal there is out of the question in the near term, given that the current terminal isn't even complete yet.
chunhimlai wrote:
Noise wrote:
Just rearrange the runways at SEA and rebuild the terminal as a midfield terminal between the newly rearranged runways and it SEA will be fine for decades.


How about 20-30years later?

Gap between runway 16L/34R and route 99 is 1.5km only
The area there is only enough to build a terminal for 55-65million pax like changi

On the other hand SEA pax traffic grows half in 15 years, after 20years there will be more than 80m pax

Not 80m, more like 65m, according to SEA's master plan. For a frame of reference, SEA is at 46m pax now. And the midfield terminal idea couldn't work. SEA isn't like DEN, it just doesn't have much land space around the airport, so there wouldn't be room to construct it while maintaining semi-normal flight ops.
frmrCapCadet wrote:
Actually another 10 miles to the west is the Bremerton Airport. At this time the port controls a few square miles, and forestry most of the rest. The big problem is how do you get from the Seattle area to the Kitsap peninnsula? Vashon Island is less than a mile off the Kitsap peninnsula. I think the Port of Bremerton (and Seattle/Tacoma) ought to get dibs on some of that forestry land to preserve a future site. I also don't think it will ever be used, but it is the only place within 20 miles of Seattle that is vacant and level.

This might be a future option for a reliever airport, kind of like another PAE. Between Kitsap and Mason counties and northern Tacoma, it would have a catchment area of 350k+ people. The only issues are where a terminal would go and that the runway might not be wide enough.
Sancho99504 wrote:
How hard would it be to convince FX to move up to BFI? Maybe include a financial incentive to get them to move? If that can happen, then you could feasibly get DL and AS to move their hangars up north, extend A concourse down and around or build an entirely new concourse down there?
With some creativity and patience, SEA can be rebuilt into an airport of the future that could handle 60+ million people.

Currently there's a concept to move the FX area elsewhere and extend Concourse D, which I think is the more feasible than moving the AS and DL hangars. I'm not sure where FX and the other cargo airlines would go, but I'm sure that they have a plan for that. Plus, Concourse A is long enough as it is, so the Port of Seattle couldn't extend it much further without building a people mover.
Long live the Boeing 757!
 
frmrCapCadet
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 5:52 pm

Bremerton airport runway is not only not wide enough (I suspect) but likely is not heavy duty enough, new runway(s) would need to be constructed.
Buffet: the airline business...has eaten up capital...like..no other (business)
 
master14225
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 5:59 pm

Why not build the fast train to Vancouver, BC and those in Seattle, WA can use YVR instead as additional capacity if they travel internationally and leave domestic US routes for SEA?
 
master14225
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:07 pm

Is the rural site in Pierce county the one in Buckley/Enumclaw, WA?

PlanesNTrains wrote:
There are other more reasonable options first. McChord, Bremerton Airport, that site out in rural Pierce County, Paine Field, Moses Lake with a high speed train Seattle-Spokane, etc. Vashon Island will only happen if the people had no voice.
 
master14225
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:10 pm

This was what I was thinking myself, or if the fast train happens, build one in the farmland near Bellingham, WA or use YVR as additional capacity for international flights if the fast train happens.

jplatts wrote:
A 3rd commercial airport in the Seattle/Tacoma area could be built near Buckley and Enumclaw. It will certainly be cheaper to build a new commercial airport in the Buckley/Enumclaw area than it would be to build a new commercial airport on Vashon Island. In addition, an new airport in the Buckley/Enumclaw area would be located on the mainland, and there would also certainly be road access to such an airport from Seattle, Tacoma, and the Kitsap Peninsula if such an airport gets constructed.
 
twincommander
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:18 pm

A Horizon employee tried to turn Ketron Island into another airport for Seattle...

Too soon?
 
SurfandSnow
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:29 pm

Nonsense. As the Puget Sound region continues to grow, secondary airports will become increasingly viable alternatives to SEA (which, let's be honest, even today isn't all *that* bad nor congested by American standards). BLI functions as more of a Vancouver area airport, while PAE will soon become a gateway to Seattle's northern suburbs. OLM (Olympia) could be similarly developed to serve not just Washington's state capital much more effectively than SEA does today but also Seattle's southern suburbs. Perhaps commercial service could be offered at BFI (Boeing Field/King County International Airport) as well. Forget about a single mega-airport that requires most folks to endure horrendous traffic just to get in/out of there. As with other large metropolitan areas, Seattle will be best served via multiple airports that cater not just to the primary city itself but also notable suburbs and adjacent cities...
Flying in the middle seat of coach is much better than not flying at all!
 
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smithbs
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:38 pm

Oh boy, where to begin. I do agree that SEA is having problems and we need to think about diversification away from SEA, but Vashon Island????

Vashon Island - a very poor location due to insufficient access, existing property values and the attitude of existing landowners there. As for tunnel access, we're already trying to finalize the Hwy 99 replacement tunnel boring project, which went over time and over budget. Doubling down with a much larger tunnel project is politically impossible at this moment until the memory of the Hwy 99 project fades.

Transportation funding problems come up as well. The voters are sore after they approved Sound Transit 3 and are now realizing how much it cost them. It remains to be seen if ST3 is scaled back in the face of voter discontent over the rapid rise in their car license fees - this was discussed in Olympia during last session and will probably be a discussion point this January in next session. Don't forget that Washington State is a politically bipolar state - it will elect spend-happy liberals and pass anti-tax initiatives at the same time (it likes the liberal personalities but hates to fund their dreams).

The diversification away from SEA is already happening - the long awaited terminal at PAE is under construction and will be done soon. Granted, it was supposed to be done already except for the last-ditch effort at red tape by the NIMBYs. Anyway, the experiment at PAE will show what kind of appetite there is for diversification, and I'm hopeful that the demand will show up and prompt expansion of the terminal and available connections/destinations. The good part about PAE - it's already there. If you really had to expand air service in this region, you'd have an easier time turning PAE's Rwy 11/29 into more terminals than imminent-domaining Vashon Island.
 
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smithbs
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:41 pm

master14225 wrote:
Why not build the fast train to Vancouver, BC and those in Seattle, WA can use YVR instead as additional capacity if they travel internationally and leave domestic US routes for SEA?


Because we can't even build fast trains within the Puget Sound region. The one we do have is a slow train that is expanding slowly and costing large amounts of money.

Edit: Don't get me wrong, I'd love to have a subway that could connect me from East Snohomish County to downtown Seattle in a half hour, and eventually this is going to have to happen. But few people trust the WA DOT to build such a thing for a cost that isn't totally obscene. Granted, some of it isn't their fault, but some it it is as well.

http://www.spokesman.com/stories/2018/j ... nt-be-sto/
Last edited by smithbs on Tue Oct 02, 2018 6:48 pm, edited 1 time in total.
 
QXAS
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:45 pm

Vashon residents wouldn’t allow it. And even I they did, tunnels/ bridges wouldn’t be feasible. Puget sound is a glacial fjord. It’s incredibly deep. If bridging it was feasible it would have been done already. Probably between Edmonds and Kingston as the people of Vashon are known to be willing to destroy any bridge touching their island. This is why the Ferries exist. The chart is a little deceptive. Like an aeronautical chart it shows the least depth in that area. For instance, due west of Seattle, the sound reaches 800 feet deep. Between West Seattle and Vashon it’s about 600 at its deepest point. For comparison, Chesapeake bay is 174’ and Mobile bay is 75’. Lake Washington is deeper than either of the two.
Only a floating bridge would be possible from that standpoint. But a floating bridge would be constantly opening for freighters and barges. This would cause numerous traffic disruptions. So a bridge won’t work. That means ferry. The amount of necessary capacity would be ridiculously huge. WSFs entire fleet would not be able to meet the demand.
Last edited by QXAS on Tue Oct 02, 2018 6:52 pm, edited 1 time in total.
I am NOT an employee of any airline or manufacturer. I speak for myself, not on the behalf of any company.
 
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bluefltspecial
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 6:46 pm

Sancho99504 wrote:
Themotionman wrote:
No thanks... I don't want any planes flying over my head.

Also, Surely the Puget Sound is too deep for a tunnel.


I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.


Ummm no.

The Puget sound is around 900'/280m deep on average with other areas deeper.

For comparison, the Chesapeake Bay's deepest point was around 175' / 53m.

There is a reason there are floating bridges used for roads like The 520 as well as others in the area, it's just too deep and hard base for normal pile driven bridges, and too deep for tunnels and mostly rock to dig through.
Save a horse, ride a Fly-boy....
 
iamlucky13
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 7:59 pm

717atOGG wrote:
As has been mentioned before, Vashon Island isn't an option because of NIMBYs


This goes beyond being in people's "back yards", and ultimately means kicking people out of their homes or businesses. That should always be a measure of last resort, in my opinion, and if that last resort comes up, minimizing those displaced should be a high priority. That means hundreds more households displaced if a new airport were built in a place like Vashon or near Enumclaw, and several thousand households experiencing significant new noise impacts.

And then there's the challenge of building one of more deepwater bridges across a busy shipping channel.

Hence why discussion generally starts with utilizing existing airports in the region like Paine Field or McChord as reliever airports. Both of those examples have challenges and limitations, but as far as I see, neither are nearly as significant as a completely new airport.

SeaTac, meanwhile, does have room to re-arrange some of the existing facilities to increase terminal space, or to displace adjacent commercial and park space uses.

We don't have to speculate blindly about this, either. The Port is already planning long term projects with a goal of accommodating 66 million passengers per year by 2034. The lead concept currently involves moving some of the cargo operations to the area around the tank farm's current location (and I think relocating the tank farm). Then in part of area freed up by relocating cargo operations, a new concourse would be built, with pedestrian bridges over Airport Expressway to a new ticketing and baggage claim area and parking garage where there is currently ground-level parking.

Those who want more detail can get hundreds of pages of it by looking up the Sustainable Airport Master Plan.
 
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ER757
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 8:38 pm

Discounting the OP's absurd idea of an airport on Vashon, there are a couple viable options proposed in this thread.
Bremerton and Olympia could be turned into limited commercial airports as relief for SEA - like PAE is doing in the immediate future.
I will predict right now that the flights out of PAE are going to be full right from the get-go and that AS and UA are likely going to be upgauging from E175's to 737s in very short order. Anyone from Bellevue up to Mt Vernon would choose PAE over SEA if there was a flight to their destination to avoid the traffic headaches and congestion at SEA. I'd think the same would hold true for OLY from Tacoma south
 
PlanesNTrains
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 8:44 pm

master14225 wrote:
Is the rural site in Pierce county the one in Buckley/Enumclaw, WA?

PlanesNTrains wrote:
There are other more reasonable options first. McChord, Bremerton Airport, that site out in rural Pierce County, Paine Field, Moses Lake with a high speed train Seattle-Spokane, etc. Vashon Island will only happen if the people had no voice.


Tanwax Lake. Old proposal - not sure if it’s viable.
-Dave


MAX’d out on MAX threads. If you are starting a thread, and it’s about the MAX - stop. There’s already a thread that covers it.
 
jpetekyxmd80
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 9:16 pm

I am actually impressed by how stupid this is. This was quite a good laugh.

Aside from all the other ridiculous aspects of this, did you stop for a moment to think why there are no major bridges or tunnels in major length across the Puget sound?
The Best Care in the Air, 1984-2009
 
Sancho99504
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Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 10:55 pm

bluefltspecial wrote:
Sancho99504 wrote:
Themotionman wrote:
No thanks... I don't want any planes flying over my head.

Also, Surely the Puget Sound is too deep for a tunnel.


I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.


Ummm no.

The Puget sound is around 900'/280m deep on average with other areas deeper.

For comparison, the Chesapeake Bay's deepest point was around 175' / 53m.

There is a reason there are floating bridges used for roads like The 520 as well as others in the area, it's just too deep and hard base for normal pile driven bridges, and too deep for tunnels and mostly rock to dig through.



The Elksund Tunnel is 942 feet below the surface. The depth for a tunnel to Vashon would be roughly 600 feet.
kill 'em all and let God sort 'em out-USMC
 
Sancho99504
Posts: 621
Joined: Sun Dec 11, 2005 2:44 pm

Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 10:58 pm

bluefltspecial wrote:
Sancho99504 wrote:
Themotionman wrote:
No thanks... I don't want any planes flying over my head.

Also, Surely the Puget Sound is too deep for a tunnel.


I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.


Ummm no.

The Puget sound is around 900'/280m deep on average with other areas deeper.

For comparison, the Chesapeake Bay's deepest point was around 175' / 53m.

There is a reason there are floating bridges used for roads like The 520 as well as others in the area, it's just too deep and hard base for normal pile driven bridges, and too deep for tunnels and mostly rock to dig through.


The deepest part of Puget Sound is 927 feet. The area in which to build a tunnel is 600 feet. Esklund Tunnel is 942 feet deep.
kill 'em all and let God sort 'em out-USMC
 
Sancho99504
Posts: 621
Joined: Sun Dec 11, 2005 2:44 pm

Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:00 pm

modernArt wrote:
Sancho99504 wrote:
I'm sure the same thing was said when they built the Chesapeake Bay bridge and tunnel as well as the Mobile Bay tunnel.


Perhaps you should research the average depths of Mobile and Chesapeake Bays versus that of Puget Sound.

Elksund Tunnel is 942 feet below the water surface.
kill 'em all and let God sort 'em out-USMC
 
Utah744
Posts: 211
Joined: Mon Jul 13, 2009 10:41 pm

Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:06 pm

The Port of Seattle needs to reward airlines that upgage and fly widebodies into Seatac and cut slots for small airliners. Eventually every flight from airline hubs and major cities into Seattle will be widebodies
You are never too old to learn something stupid
 
Noise
Posts: 2435
Joined: Wed Dec 22, 1999 7:38 am

Re: New airport for Seattle-Tacoma Region

Tue Oct 02, 2018 11:18 pm

If they can move runways 19L/34R and 19C/34C to where the current terminal is so that it runs adjacent to the expressway and cemetery, then it would free up enough space between those two runways and 19R/34L for the construction of a midfield terminal.

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