Monday, April 4, 2016

San Gabriel Canyon Road (SR-39): On the Mend

Caltrans has repaired several storm damaged sections of San Gabriel Canyon Road (SR-39) 11 miles north of Azusa.  The highway has been closed to public access since January 6 at East Fork Road.  

What’s been completed so far:
  • Four of five washed out slopes have been rebuilt and stabilized.
  • Nearly 80 percent of the debris basins have been cleared.
  • Fiber mesh has been installed on the slopes to prevent future erosion from heavy rains. 
What’s left to do:
  • 1,000 to 1,500 feet of asphalt concrete berms will be reconstructed on the roadside.
  • About one hundred feet of the highway will need to be repaved.
  • Nearly 2,000 feet of rip rap (rocks) will be installed to prevent water and debris flows from damaging the slopes during heavy rains. 
  • Re-stripe the highway. 
  • A view of the slope from below. 

    Rebuilt slope. Looking north. 
    No permitted access will be granted to the construction zone or locations beyond the closure during and after work hours. 

    Two separate repaired slopes. 
    During heavy rains in January, mud and debris flows blocked drainage systems and washed out support slopes along the highway (post mile 28.0 to post mile 31.0) in the Cabin fire burn area.

    he public and other interested parties should contact Caltrans District 7 Public Affairs and Media Relations at 213-897-3656 or visit:

    O’Donnell Construction Inc. of San Dimas, California was awarded this $2 million contract.  This project is expected to finish in early May 2016.  This contractor will make the initial repairs and respond to protect the highway in this section during heavy storms.