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



Bottom Buttons 1

Bottom Buttons 2

Bottom Buttons 3

Bottom Buttons 4

Bottom Buttons 5

Bottom Buttons 6





  • New Rancho Santa Fe Library Branch Manager welcomes community input
    Rancho Santa Fe Library’s new Branch Manager Haley Kwon has been charmed by the village’s “sweet, down-home” character, the simple pleasure of visiting the local library and people’s enjoyment of a slower speed of time. “It’s a small town and the library is a place for people to connect,” Kwon said. “People have a different sense of time here, they come in t […]
  • Robotics booming at Rancho Santa Fe School
    By Karen Billing At R. Roger Rowe School, 44 percent of first graders are participating in the robotics program this year. The school is fielding 44 robotics teams, including 31 percent of second grade, 23 percent of third grade, 35 percent of fourth grade and 39 percent of fifth grade. In the middle school, there are two FIRST LEGO League (FLL) teams and fi […]
  • Berkshire Hathaway HomeServices honored with Stevie Gold Award
    Berkshire Hathaway HomeServices was recently named Startup of the Year in the 2014 American Business Awards, earning the brokerage the Stevie Gold award. The award was presented at the Fairmont Millennium Park Hotel in Chicago, Illinois. “Berkshire Hathaway HomeServices is among a select few organizations to be entrusted with the Berkshire Hathaway name,” co […]