JMA, supported by a multidisciplinary design team of geometric, geotechnical, and structural engineers, led project development and design for the 3-span viaduct structure conforming to Caltrans specifications, complete with MSE walls, that will be constructed alongside the existing bridge. JMA assisted UC Berkeley in analyzing different alternatives to improve the Centennial Bridge that needs replacement over Lawrence Rd due to a localized slope failure. Scope of work includes preparation of a detailed alternatives analysis report, including horizontal and vertical roadway geometry, traffic impacts, site improvements, construction phasing, earthwork, risk analysis, class V cost estimates, and a multitude of other items related to the conceptual design of the alternatives. Additionally, JMA led coordination with project stakeholders and a study for the adjacent Botanical Garden parking lot that was impacted by the viaduct. JMA coordinated with LBNL during the design to provide a phasing plan that would limit impacts to LBNL operations. The Lab discussed certain tangential projects to improve parking and access to the Lab. JMA collaborated with LBNL to propose a plan that would provide additional parking spaces along Lawrence Road to ease the Lab’s parking struggles and is currently assisting UCB with the final design. Construction was completed in Summer of 2024.
