511 Contra Costa

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project. Please note that inclement weather may cause schedule changes.

Closures tentatively will begin Monday night, May 21 and will occur nightly through May 24 (ending in the early morning of May 25):

• Overnight Westbound Fish Ranch Road Onramp Closures (in Orinda): Occurring nightly between the hours of 9 p.m. and 5 a.m.
• Overnight Closures of right lanes on Westbound State Route 24 from the Camino Pablo Onramp (in Orinda) to Bore Three: Occurring nightly between the hours of 9:30 p.m. and 4 a.m.
• Overnight Bore Three Closures (towards Oakland): Occurring nightly between the hours of 10 p.m. and 4 a.m.

Please note that due to the Memorial Day holiday weekend, there will be no planned closures in the evening of May 25, or during Memorial Day weekend. Nighttime closures will resume on Tuesday, May 29.

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391.8 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming closures visit the Traffic Page of the project website.

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project for the week of May 14, 2012. Please note that inclement weather may cause schedule changes.

Closures tentatively begin Monday night, May 14, and will tentatively occur nightly through Friday, May 18.

Monday, May 14 – Thursday, May 18

• Overnight Closure from Westbound Wilder Onramp to Bore 3 (towards Oakland): Occurring nightly, 9:30 PM – 4 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 10 PM – 4 AM
• Overnight Closure from Westbound Fish Ranch Onramp (towards Oakland): 9 PM – 4 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 10 PM – 4 AM

Friday, May 19 – Saturday, May 20

• Overnight Closure from Westbound Wilder Onramp to Bore 3 (towards Oakland): Occurring nightly, 10:30 PM – 7 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 11 PM – 7 AM
• Overnight Closure from Westbound Fish Ranch Onramp (towards Oakland): Occurring nightly, 10 PM – 8 AM

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391.8 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming closures visit the Caldecott Tunnel Traffic Page.

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project for the week of May 7-11, 2012. Please note that inclement weather may cause schedule changes.

Closures tentatively begin Monday night, May 7, and will tentatively occur nightly through Friday, May 11.

Monday, May 7 – Thursday, May 10

• Overnight Westbound Fish Ranch Road Onramp Closures (in Orinda): Occurring nightly, 9 PM – 5 AM
• Overnight Closures of right lanes on Westbound State Route 24 from Camino Pablo Onramp (in Orinda) to Bore Three (towards Oakland): Occurring nightly, 9:30 PM – 4 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 10 PM – 4 AM

Friday, May 11

Please note: On Friday night (May 11) closures of the above lanes and ramps are planned to begin one hour later than the Monday – Thursday schedule. The anticipated reopening times are as follows:

• Westbound Fish Ranch Road Onramp in Orinda expected to reopen at 8 AM on Saturday, May 12.
• Westbound State Route 24 right lanes between Camino Pablo onramp in Orinda and Bore #3 expected to reopen at 7 AM on Saturday, May 12.
• Bore #3 (towards Oakland) expected to reopen at 7 AM on Saturday, May 12.

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391.8 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming closures visit the Caldecott Tunnel Traffic Page.

URGENT: FINAL WEEK OF THE COMPETITION! SUBMIT YOUR ENTRY SOON!

Competition Deadline: 4:30 PM, Monday, May 7, 2012

The Fourth Bore of the Caldecott Tunnel will bring congestion relief to busy State Route 24 between Alameda and Contra Costa Counties. The Caldecott Medallion Design Competition will provide the children of these two counties an opportunity to play a role in the design of an important architectural detail of the Fourth Bore. In order to be considered in the competition, it is crucial that participants submit their entries no later than 4:30 PM on May 7, 2012.

The Caldecott Fourth Bore will have three “medallions” cast out of concrete on each side of the tunnel. The medallions will be located above the tunnel openings on the east and west sides and will become a part of this regional landmark for years to come.

All schoolchildren (K-12) who live in Alameda or Contra Costa Counties are asked to contribute artwork for the Medallion Design Competition. The competition deadline is only days away! Time is running out, and participants are strongly urged to submit their entries either to one of two drop off locations, or by U.S. Mail.

Drop Off Addresses (Must be received by 4:30 PM): Caltrans, District 4 Attn: Medallion Design Competition 111 Grand Avenue Oakland, CA 94612

Caldecott Construction Office Attn: Medallion Design Competition 3390 Mount Diablo Blvd Suite 200 Lafayette, CA 94549

Mailing Address (Postmarked by May 7th): Caltrans, District 4 Attn: Medallion Design Competition P.O. Box 23660 Oakland, CA 94623-0660

Three (3) winners from each county will be selected; the winning artwork will be used to design the molds which will create the Fourth Bore medallions. Children of the Fourth Bore Project Team and Caltrans employees are welcome to participate in the design competition.

Contest Theme: Art Deco Revisited

The theme for the Medallion Design Competition was selected by Bay Area residents via an online survey on the project website. As a tribute to the original Caldecott medallions that were created in the 1930s, the theme for the competition will be “Art Deco Revisited.” Students are encouraged to exercise their creative imaginations around the theme to explore ways that the past and present styles come together. Click here for more information about Art Deco.

Visit www.caldecott-tunnel.org/medallion for competition details.

How to Enter…

• Download the Contest Entry Packet Here
• Review the Contest Rules and Guidelines Here
• Fill out the Artist Information & Release Form – Please be sure to sign it!
• Adhering to the contest theme “Art Deco Revisited,” create your masterpiece on the Contest Entry Form – Don’t forget to write your “artist’s statement.”
• Drop off or mail your entry by Monday, May 7, 2012. (See contest guidelines for entry requirements and submission locations)

Visit www.caldecott-tunnel.org/medallion for details and more information on the competition.

Questions can be emailed to: medalliondesign@caldecott-tunnel.org

The Caldecott Fourth Bore Project is a partnership between the Federal Highway Administration, the California Department of Transportation, the Metropolitan Transportation Commission, the Contra Costa Transportation Authority, and the Alameda County Transportation Commission

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project for the week of April 30-May 4, 2012. Please note that inclement weather may cause schedule changes.

Monday, April 30 – Friday, May 4

• Overnight Westbound Fish Ranch Road Onramp Closures (in Orinda): Occurring nightly, 9 PM – 5 AM
• Overnight Closures of right lanes on Westbound State Route 24 from Camino Pablo Onramp (in Orinda) to Bore Three (towards Oakland): Occurring nightly, 9:30 PM – 4 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 10 PM – 4 AM

Friday, May 4 – Saturday, May 5

Please note: On Friday night (May 4) closures of the above lanes and ramps are planned to begin one hour later than the Monday-Thursday schedule. The anticipated reopening times are:

• Westbound Fish Ranch Road Onramp in Orinda expected to reopen at 8 AM on Saturday, May 5.
• Westbound State Route 24 right lanes between Camino Pablo onramp in Orinda and Bore #3 expected to reopen at 7 AM on Saturday, May 5.
• Bore #3 (towards Oakland) expected to reopen at 7 AM on Saturday, May 5.

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391.8 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming closures visit the Caldecott Tunnel Traffic Page.

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project for the week of April 23-27, 2012. Please note that inclement weather may cause schedule changes.

Monday, April 23 – Thursday, April 26

• Overnight Westbound Fish Ranch Road Onramp Closures (in Orinda): Occurring nightly, 9 PM – 5 AM
• Overnight Closures of right lanes on Westbound State Route 24 from Camino Pablo Onramp (in Orinda) to Bore Three (towards Oakland): Occurring nightly, 9:30 PM – 4 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 10 PM – 4 AM

Friday, April 27 – Saturday, April 28

Please note: On Friday night (April 27) closures of the above lanes and ramps are planned to begin one hour later than the Monday-Thursday schedule. The anticipated reopening times are:

• Westbound Fish Ranch Road Onramp in Orinda expected to reopen at 8 AM on Saturday, April 28.
• Westbound State Route 24 right lanes between Camino Pablo onramp in Orinda and Bore #3 expected to reopen at 7 AM on Saturday, April 28.
• Bore #3 (towards Oakland) expected to reopen at 7 AM on Saturday, April 28.

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391.8 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming closures visit the Caldecott Tunnel Traffic Page.

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project. Please note that inclement weather may cause schedule changes.

For the Week of April 16-20, 2012:

Monday, April 16 – Thursday, April 19:

• Overnight Westbound Fish Ranch Road Onramp Closures (in Orinda): Occurring nightly, 9 PM – 5 AM
• Overnight Closures of right lanes on Westbound State Route 24 from Camino Pablo Onramp (in Orinda) to Bore Three (towards Oakland): Occurring nightly, 9:30 PM – 4 AM
• Overnight Bore Three Closures (towards Oakland): Occurring nightly, 10 PM – 4 AM

Friday, April 20:

Please note: On Friday night (April 20) closures of the above lanes and ramps are planned to begin one hour later than the Monday-Thursday schedule. The anticipated reopening times are:

• Westbound Fish Ranch Road Onramp in Orinda expected to reopen at 8 AM on Saturday, April 21.
• Westbound State Route 24 right lanes between Camino Pablo onramp in Orinda and Bore #3 expected to reopen at 7 AM on Saturday, April 21.
• Bore #3 (towards Oakland) expected to reopen at 7 AM on Saturday, April 21.

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391.8 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming closures visit the Caldecott Tunnel Traffic Page.

Hey East Bay Students! If you attend school K-12 in Contra Costa and Alameda counties, you have a chance to create art for the ages – a medallion cast in concrete that will adorn the $391 million Caldecott Tunnel between Orinda and Oakland, for the fourth bore project.

Caltrans announced this week the opening of the competition to design six, 36-inch tall architectural medallions above the entrances to the Caldecott Tunnel fourth bore on Highway 24. This is the first student-only architectural design competition Caltrans has had in the Bay Area.

The theme Caltrans picked is “Classic art deco” known for bold outlines and geometric chapes. Art deco was popular in the 1920′s and 1930′s; it was also favored in an agency online poll on six different themes! Art deco medallions were also used for the original two Caldecott Tunnel Bores.

May 7th is the deadline to submit original art deco drawings, which Caltrans plans to use in designing molds for pouring concrete to form the decorative shapes. Two separate panels of art judges will evaluate entries from the two counties.

For more  information and how to enter click here.

Below is the anticipated schedule of upcoming westbound ramp and lane closures associated with work on the Caldecott Fourth Bore Project.

The Week of February 27, 2012:

Closures begin Monday night, February 27 and will tentatively occur nightly through Friday, March 2.

• Overnight Westbound Fish Ranch Road Onramp Closures (in Orinda) Occurring nightly between the hours of 9 p.m. and 5 a.m.
• Overnight Lane Closures on Westbound State Route 24 from Wilder Ranch Onramp (in Orinda) to Bore Three (towards Oakland): Occurring nightly between the hours of 9:30 p.m. and 4 a.m.
• Overnight Bore Three Closures (towards Oakland): Occurring nightly between the hours of 10 p.m. and 4 a.m.

Please note: On Friday and Saturday nights (March 2 & 3) closures of the above lanes and ramps are planned to begin one hour later than the Monday-Thursday schedule. The planned reopening times are as follows:

• Westbound Fish Ranch Road Onramp expected to reopen at 7 a.m. on Saturday, March 3
• Westbound State Route 24 Lane Closure between Wilder Ranch Onramp and Bore #3 expected to reopen at 7 a.m. on Saturday, March 3
• Bore #3 (towards Oakland) expected to reopen at 6 a.m. on Saturday, March 3

In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the $391 million Caldecott Fourth Bore Project includes traffic improvements on the eastern and western sides of the tunnel.

For more information on the upcoming ramp closure, visit www.caldecott-tunnel.org.

Now that the east and west sides of the Caldecott Tunnel meet, construction crews have started working on installing rails for a gantry system and waterproof membrane. Check out the newest construction photos below.

Above: Crews began installation of the rails for the gantry system and the waterproof membrane in early January 2012. The gantry system is a set of tracks and a frame that will enable the waterproofing and final lining installation equipment to slide from west to east as tunnel excavation is completed.

Above: Installation of the waterproofing membrane will be completed in sections followed by the concrete arch tunnel lining and roadway concrete.

And if you missed the Caldecott Tunnel Fourth Bore Breakthrough, here’s a neat time-lapse video:

For more official Caldecott Tunnel construction information, visit http://caldecott-tunnel.org