BRIDGE REPLACEMENT SPEARHEADS MAMMOTH FLOOD CONTROL PROJECT

Construction of major flood control channels and structures is now underway in southern California on the first and second stages of the Corps of Engineers' long-range, ten-reach flood control plan for the three counties surrounding the Santa Ana River. The California Department of Transportation (Caltrans) is concurrently reconstructing the Pacific Coast Highway bridge over the river. During construction, the contractor has had to contend with not disturbing the California Least Terns, an endangered bird species in the midst of nesting season in Talbert Marsh. Talbert Marsh is one of the few surviving inhabited wetlands in southern California. The bridge project will take two years to complete instead of one to accommodate the least terns' nesting seasons which run from April to September, the flood season in the river, and traffic phasing on the Pacific Coast Highway (California Route 1). This article provides further details on the project scope and the bridge construction. There are two inserts accompanying this article. One describes the two sound walls, one for residential noise protection and the other a temporary construction to shield the endangered birds from pile driving noise. The second insert describes the Corps of Engineers' attempts to contain the Santa Ana River.

  • Availability:
  • Corporate Authors:

    Cahners Publishing Company

    275 Washington Street
    Newton, MA  United States  02158-1630
  • Authors:
    • Hodson, C
  • Publication Date: 1991-11

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 34-37
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00616521
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 30 1991 12:00AM