The Suburban Water Systems was planning on installing a 12” steel water pipe under the Artesia Blvd. bridge crossing over the Coyote Creek in the City of La Mirada. The existing bridge is a single span precast concrete “I” girder structure, approximately 106 feet in length. The new pipeline was designed to be below the north overhang of the bridge with bends around the faces of the abutments to exit the bridge structure. The supports for the pipeline consisted of steel hangers off the bridge deck overhang, with braces to the bridge girders to prevent sway. Outside the bridge abutments, appropriate fittings and bends were installed to redirect the pipe vertically to meet adequate cover below grade and to join the overall pipe alignment at appropriate locations as directed by Suburban Water Systems.
PacRim Engineering provided design services to SWS to implement the crossing. The scope of work included pipeline plan and profile, fitting details, structural design and hanger details, and final contract plans. PacRim provided the structural calculations and specified the type and size of pipe hangers to use. PacRim also provided filed observations of the installation of the hangers to ensure proper placement and connection was made.