AbstractHouston's water system serves more than 4.5 million people regionally and produces more than 146 billion gallons of treated water every year. The City has more than 300 above-grade water line crossings, some of which have been in service for over 75 years. In 2012, Houston Public Works (HPW) implemented a program to inspect every above-grade water line crossing across the City. Over 200 crossings were identified as needing repair or rehabilitation, and of those crossings, 21 were considered large diameter, or 24-inches in diameter and larger. In cooperation with HPW and the Surface Water Transmission Program (SWTP), a comprehensive field assessment was performed on these 21 crossings, and criteria was developed to address the deficiencies.Most of the crossings that were evaluated were recommended only for recoating, which increases the expected life of the line at a faster pace, and for a fraction of the capital investment of replacement. However, coating of active water lines has its own challenges; specifically, how to prepare for and apply coatings in field conditions without a shutdown. Furthermore, environmental health and safety measures were required due to presence of lead and asbestos.The first package, Rehabilitation of Above Grade Crossings Pkg. 1, with 15 locations ranging in diameter from 24-inch to 60-inch, received final completion in April 2018. This paper will follow the best practices for planning, design and construction for rehabilitating large-diameter above grade crossings.