Pile drilling and installation to stabilize Del Mar bluffs completed

Construction crews have finished all pile drilling and installation associated with a $4.8 million effort to stabilize the coastal bluffs along the railroad track in Del Mar. This milestone means that the most significant construction activity in the stabilization effort is complete. Remaining work is expected to wrap up within weeks.

The 1.6-mile segment of track along the Del Mar bluffs is an integral part of the 351-mile San Luis Obispo – Los Angeles – San Diego (LOSSAN) rail corridor, which provides a vital link for regional, national, and international movement of passengers and freight. The North County Transit District (NCTD) COASTER and Metrolink commuter rail services, Amtrak Pacific Surfliner intercity service, and BNSF Railway freight service all rely on this segment of track to serve their customers.

SANDAG has led the construction effort in collaboration with NCTD and the City of Del Mar. The work is expected to be complete before the Christmas holiday, within the originally estimated five-month timeline.

Periodic stabilization of the bluffs is necessary to help preserve trackbed support to ensure uninterrupted passenger and freight rail service along the nation’s second busiest passenger rail corridor. With more than 50 trains per day operating on the San Diego segment, construction work must be performed at night.

Working Sunday through Thursday nights, construction crews installed 92, three-foot-wide soldier piles in seven different areas, totaling approximately 900 linear feet. The piles were placed in vertically drilled shafts into the bluffs to depths ranging from 45 to 60 feet and are designed to help secure sections of the bluffs for approximately 20 years.

Coastal erosion has been an ongoing challenge since the rail line was built more than a century ago. SANDAG and NCTD conducted stabilization efforts most recently in 2002 and 2007 at various locations along the Del Mar bluffs.

The last major stabilization effort occurred over a period of about nine months from June 2007 to March 2008. During that time, SANDAG placed 136 soldier piles in areas spanning a combined length of about 1,300 feet.

NCTD will continue to monitor the stability of the bluffs to ensure continued safe rail operations. Additional stabilization efforts are anticipated in the future and will be conducted based on need and funding.

The $4.8 million project was funded predominantly by Caltrans through the State Transportation Improvement Program, with $224,000 from the U.S. Department of Transportation Federal Transit Administration.

West Coast General Corp. and Condon-Johnson & Associates, Inc. served jointly as general contractors for the project. CALTROP provided construction management services. The project was engineered by David Evans and Associates, Inc. Other subconsultants included HELIX Environmental Planning, Inc., Leighton Group for geotechnical services, and Everest International for hydrology.

Additional information about the project is available online at sandag.org/delmarbluffs. — Submitted by SANDAG

Related posts:

  1. Residents voice concern over impacts of next phase of Del Mar Bluff Stabilization project
  2. Installation of new power poles begins
  3. A response from Carl Hilliard to Helen and Richard Nielsen-Eckfield
  4. Temporary lane closure on Lomas Santa Fe Drive starting Monday, Dec. 12
  5. First phase of animal center expansion slated to be completed by October

Short URL: http://www.delmartimes.net/?p=29931

Posted by Staff on Dec 9, 2011. Filed under Carmel Valley, Del Mar, News, Solana Beach, carmel valley. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

Leave a Reply

Archives

Facebook

Bottom Buttons 1

Bottom Buttons 2

Bottom Buttons 3

Bottom Buttons 4

Bottom Buttons 5

Bottom Buttons 6

LA JOLLA NEWS

RSS LA JOLLA NEWS

  • FRONTLINE CANCER: Exercise, exercise, exercise!
    Regular exercise improves health in ways most of us already know. It helps control weight, maintain strong bones, muscles and joints, reduce the risk of heart disease, diabetes and premature death. Exercise quite literally makes us feel better, physically and mentally. […]
  • Hunger Games in the Real World
    At age 6, Nya, a girl living in San Diego, was suffering from malnourishment because her father, a single parent was struggling to raise (and feed) his children on an $11-an-hour job. For long periods of time their cupboards were bare, and Nya, who is now 18, subsisted on a diet of ramen noodles and free lunches provided by her charter school. She was in cri […]
  • Fall brings the call to learn something new
    Local gems like UCSD Extension, Osher Lifelong Learning, La Jolla Community Center and La Jolla Library all offer a variety of opportunities for personal growth — and all welcome newcomers. […]

RANCHO SANTA FE NEWS

RANCHO SANTA FE NEWS

RSS RANCHO SANTA FE NEWS

  • Rancho Santa Fe Invasive Plants and Better Alternatives
    By Steve Jacobs, Nature Designs In California we are lucky to live in a mild climate that allows us to grow amazing landscapes. Because of this mild climate, plants from other parts of the world often thrive; and some grow so well they become known as invasive. These plants ‘jump fences’ and ‘throw seeds.’ Their […]
  • Rancho Santa Fe School District’s robotics program receives new funding
    The Rancho Santa Fe School District is making its school’s robotics program more robust this year, allocating $42,500 in stipends to staff coaches just like the district does for its athletics program. “I think the program has taken a big step,” said Superintendent Lindy Delaney. “I think we’re on our way toward developing a great program there.” John Galipa […]
  • Back to School for R. Roger Rowe students
    Students at R. Roger Rowe School bid a fond farewell to summer and headed back to school Aug. 25. Photos by Jon Clark. […]