This weekend, the I-405 in Los Angeles was closed for some 50 hours (Dubbed "Carmageddon" in the press) in order tear down half of the Mullholland Overpass that was built in the 1950's. As you can see, the project involved dropping lots of the debris on the highway; thus the closure.
Take a look at this time lapse and you'll see what really went on. Lots of jackhammers mounted on cranes that just chewed away at the bridge for hours and hours. The roadway had already been removed. This project was to eliminate the bridge structure and its pillars. (note: click on the photos for a bigger picture.)
Photo credit: Stephen Estes
With the highway closed for the project, Steven Estes took a nap on the roadway.
Photo credit: CalTrans
Interesting that the bridge was built right on top of the mountain, and then the hill was removed to expose the bridge.
Photo credit: CalTrans
The 405 without cars, because the 405 was only dirt.
A great animated movie showing Los Angeles without cars. Hmmm. Like boat without barnacles, or....
Because the 405 connects LA with Burbank, Jet Blue ran a promotion where they would fly you from LAX to Burbank. Some cyclists thought... hmmm we can beat a jet flying from LAX to Burbank, and they did: http://www.slate.com/id/2299432/?from=rss Cyclists win Jet Blue Challenge
This illustrates what they are planning for the 405. More lanes, of course.
From Draft Environmental Impact Statement (not sure which one they decided on)
Click above to watch Hitler react to the 405 closure.
And below are more photos and lots of links....
Lots of Links:
http://cairn.com/wp/installation/carmageddon-timelapse/ started a timelapse; not finished
http://www.facebook.com/405project CalTrans 405 project on Facebook
http://www.kiewit.com/groups/infrastructure.aspx Contractor Kiewit Infrastructured built the original bridge, and now is the one to remove it.
http://www.kiewit.com/business-with-us/dbe-opportunities/~/media/assets/files/dbe/sepulveda%20pass/sepulveda%20pass%201Q%202010%20updates.ashx Kiewit's call for subcontractors
Contract No. C0882 is a firm fixed price, federally funded contract, for Design Build of
the 1-405 Sepulveda Pass Widening Project. The scope of work consists of adding a
northbound 10-mile HOV lane and supporting infrastructure improvements such as
ramps, bridges and sound walls on the San Diego Freeway (1-405) from the Santa
Monica Freeway (1-1 0) to the Ventura Freeway (U.S. 101)
http://www.metro.net/board/Items/2010/11_november/20101118CONItem3.pdf Increase of project contract to $729M to add $3M for bridge removal
http://www.dot.ca.gov/dist07/Publications/Inside7/story.php?id=538 Background of the HOV lane project from CalTrans
http://www.dot.ca.gov/hq/asc/oap/payments/public/ctors.htm Caltrans contracts by contractor
http://www.dot.ca.gov/hq/asc/oap/payments/public/04012024.htm Hmmm. Another project for Kiewit Infrastruture: Little project here. Replace part of SF Bay Bridge. $1.179B disbursed so far!
http://www.dot.ca.gov/dist12/press/Exhibits_to_Metro_110526.pdf CalTrans maps of 405 "Carmageddon" closure
http://www.dot.ca.gov/hq/esc/oe/planholders/awarded.php?search=Search&a=&b=&c=k&d=&q=f Search Caltrans contracts
http://www.dot.ca.gov/dist07/resources/envdocs/docs/I405_SepulvedaPass_IR_EIS.pdf Draft Environmental Impact Report/Environmental Impact Statement (large file)
Contract numbers from LA Metro: