24th Street Sewer Improvements

The City of National City is seeking qualified contractors to replace and upgrade the 24th Street sanitary sewer system. The work includes full trenching, removal of existing vitrified‑clay pipe, installation of new SDR‑35 PVC mains (8‑in., 10‑in., and 12‑in.), new standard and drop manholes, back‑water valve assemblies, utility relocation, and extensive streetscape improvements such as curb, gutter, sidewalk replacement, ADA‑compliant curb ramps, and asphalt milling & resurfacing. The project also requires installation of conduit and pull‑boxes for future fiber‑optic and traffic‑signal infrastructure, and compliance with the City’s Project Labor Agreement and prevailing‑wage requirements. • Replace ~2,223 LF of 6‑in. VCP, 2,210 LF of 8‑in. VCP, and 60 LF of 10‑in. VCP with larger PVC equivalents. • Install new 48‑in. and 60‑in. standard and drop manholes, back‑water valves, and lateral connections. • Perform asphalt milling, base placement, and overlay, plus curb, gutter, sidewalk, and ADA ramp construction. • Provide utility coordination, de‑watering, erosion control, and future conduit installation for fiber‑optic and traffic‑signal systems. • All work must adhere to the City’s PLA, prevailing‑wage rules, and strict schedule (150 working days).