Saturday, October 25, 2014

Brightwater conveyance tunnel plan

http://memorieshop.com/Seattle/Brightwater/index.html

The second Herrenknecht machine (BT2), excavating the eastbound drive to the North Creek shaft and pump station, has been shut down since mid-December for extensive wear repairs to the cutterhead. With work being done under air pressure of up to 4.4 bar, compressed air maintenance crews work for 45 minutes only, followed by three hours of decompression. The machine is about 6,500ft (2,000m) into its 11,600ft (3.5km) drive.
http://www.tunneltalk.com/Brightwater-Mar09-Brightwater-sinkhole.php

https://www.google.ca/search?q=Brightwater+conveyance+tunnel+plan&es_sm=93&tbm=isch&tbo=u&source=univ&sa=X&ei=i9VLVN7EEqfciALgqIDwCA&ved=0CB4QsAQ&biw=1422&bih=776&dpr=0.9

https://www.google.ca/search?q=Brightwater+conveyance+tunnel+plan&oq=Brightwater+conveyance+tunnel+plan&aqs=chrome..69i57.840j0j7&sourceid=chrome&es_sm=93&ie=UTF-8

Seattle: AWV Replacement Tunnel Project

"The Alaskan Way Viaduct was built in three phases in 1949 through 1953 and opened on April 4, 1953."
http://en.wikipedia.org/wiki/Alaskan_Way_Viaduct

http://en.wikipedia.org/wiki/Alaskan_Way_Viaduct_replacement_tunnel

Cost Overruns For Seattle-Area Tunnel Projects

www.sightline.org/wp-content/uploads/downloads/.../tunnel_report.pdf
along Seattle's waterfront with a deep-bore tunnel underneath downtown Seattle. .... 21 foot diameter boring machine passed beneath Beacon Hill.8 .... and International Tunnel Projects,” Alaska Way Viaduct and Seawall ... Tunnel is 14,050 feet in length; the Central Tunnel consists of two tunnels, the first is 11,600 feet long.

Alaskan Way Viaduct and Seawall Replacement Project ...

www.wsdot.wa.gov/projects/viaduct/.../DEISAppendixCTransportation.pdf
Mar 1, 2004 - 3.1.8 Alaskan Way Viaduct Project: Task 1 Report (December 1996) . ...... The AWV has narrow 10-foot lanes, very limited shoulders or shy distance to ......11,600. 11,800. 11,900...

http://en.wikipedia.org/wiki/List_of_Seattle_bridges


Sunday, August 17, 2014

a

Vancouver, Burnaby and NW...

The Burrard_Peninsula should have been planned as one city well over a century ago. Then eventually adding the Eastern Tri-Cities.
Unlike most of the region, theses 6 little cities don't have wide rivers or an inlet to hinder them.
Thus, it's more relatively easier to get around.
Greater Vancouver has been reluctant to build a few more bridges in the region. Bottleneck planning is the name of the game. Of course for most major urban areas around the world, rivers just aren't as much of a hindrance. 

Old Vancouver
https://www.youtube.com/watch?v=tKHVHG2VhZc


VancouverBurnaby & NW are essentially the main regional Tri-Cities, but there is still another set. 



North_Vancouver_(city) is sort of in-between West_Vancouver and North_Vancouver_(district_municipality). They are like the Northern Tri-Cities of the Greater Vancouver Metropolitan Regional_District

So far, its been difficult or simply unpopular to merge all 3 sets of Tri-Cities.




slc

Thursday, June 26, 2014

Thursday, May 8, 2014

a

b

a

NYC 185m-tunnel-leads-nowhere-for-now


The 800-foot-long, 35-foot-deep concrete trench could someday lead to two new commuter rail tunnels under the Hudson River to New Jersey, if the billions needed to build them ever materialize.
The access tunnel is being built now because the massive Hudson Yards development with six skyscrapers, the tallest being 80 stories, will soon be built on top of it. Trying to dig such a huge trench through the bedrock after those buildings are completed, officials say, would be an engineering and financial nightmare.
https://ca.finance.yahoo.com/news/nyc-185m-tunnel-leads-nowhere-now-built-still-060902130.html
The access tunnel is expected to be completed in fall 2015.
Currently, there are two tunnels, opened in 1910, between New York's Penn Station and Newark, N.J., and they are unable to accommodate any more trains. They also flooded during Superstorm Sandy in 2012.
Any kind of breakdown or glitch in the tunnels can lead to huge delays for the 250,000 people who use Penn Station every day to ride NJ Transit and Amtrak.
"There's an urgent need to expand capacity between New York and New Jersey," says Craig Schulz, spokesman for Amtrak, whose trains serving the Northeast corridor between Washington and Boston are often packed, with ridership growing.

http://en.wikipedia.org/wiki/Access_to_the_Region's_Corehttp://www.tstc.org/arc

https://www.google.ca/search?q=ARC%2C+or+Access+to+the+Region%27s+Core&oq=ARC%2C+or+Access+to+the+Region%27s+Core&aqs=chrome..69i57j0.966j0j7&sourceid=chrome&es_sm=93&ie=UTF-8

the-second-narrows-bridge (imb)

https://tranbc.ca/2014/04/23/making-room-for-wider-sidewalks-on-the-second-narrows-bridge
Its unfortunate that the bridge wasn't designed to support a future upper or lower deck. This could have provided an additional 2 north & 2 southbound lanes. Plus, an LRT line with a north & southbound set of tracks.
http://www.railforthevalley.com/latest-news/yippee-vancouver-is-number-one

http://vintageairphotos.com/tag/second-narrows-bridge

Wednesday, April 16, 2014