The Department of Water Resources is seeking a qualified contractor to rehabilitate roughly 300 culverts and 50 riser structures that cross State Plan of Flood Control levees in California’s Sacramento‑River and San‑Joaquin‑River basins. The work involves full‑segment cured‑in‑place pipe (CIPP) lining, design, gate replacement, traffic control, cofferdam installation, de‑watering, and post‑installation inspections with a four‑year contract term. The contractor must hold a California General Contractor license, demonstrate extensive CIPP experience, meet DVBE participation requirements, and provide performance and payment bonds. The solicitation opens April 21 2026, questions are due April 27 2026, and bids must be received by May 8 2026. • Scope includes CIPP design, full‑segment installation for pipes 12‑72 in. diameter, box‑culvert and riser lining, gate/headwall work, and warranty inspections. • Minimum qualifications: 3 years of CIPP work, ≥ 50,000 ft of CIPP for ≤ 36 in. pipes, ≥ 10,000 ft for > 36 in., and required DVBE participation. • Payment is unit‑price based (per foot of liner, per riser, per gate, etc.) with 80 % paid after installation and the balance after final acceptance; total contract value expected in the low‑tens of millions.