CIPP Lining Installation – 30" Diameter Culverts

Caltrans District 7 in Los Angeles is seeking a subcontractor to perform cured-in-place pipe lining on thirty-inch diameter culverts at three specified locations along Interstate 5 and State Route 14. The work involves the rehabilitation of aging culverts using CIPP technology to restore structural integrity and extend service life without the need for extensive excavation. The contract is classified under NAICS code 238210, which corresponds to pipe laying services, indicating the specialized nature of the required work. The solicitation was posted on July 2, 2026, and is designated as a subcontract, suggesting it will be awarded to a vendor supporting a prime contractor on a larger state highway infrastructure initiative. Performance will occur entirely within Los Angeles County, and while specific locations and detailed scope are not outlined here, the project is part of Caltrans’ broader efforts to maintain and upgrade critical transportation infrastructure. Interested parties should review the linked project page for additional technical specifications and submission requirements.