BRIDGE THE SAN JOAQUIN RIVER - ONE CHALLENGE IN 37 MILE PIPELINE

摘要

South San Joaquin Irrigation District (SSJID) was faced with a reduced demand for irrigation water while the nearby cities were experiencing increased domestic demand and deteriorating ground water supplies. The District made the decision to supply potable water to the local communities. The project, which is now in service, will supply up to 60 mgd of treated water to the communities of Escalon, Manteca, Lathrop, and Tracy located in the Central Valley of California. The drinking water is treated in a new membrane filtration plant located adjacent to SSJID's Woodard Reservoir. The water is delivered through 37 miles of pipe and five turnouts. Each turnout has an at-grade steel reservoir and booster pumps. The pipeline design and construction included, in addition to the pipe, 10 railroad crossings, two interstate crossings, two microtunneled levee crossings, and a 641-foot-long four span pre-engineered steel truss bridge over the San Joaquin River illustrated in Figure 1. During the design and construction of the San Joaquin River Bridge Crossing the following lessons were learned.