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. Header photo provided by LBNL © The Regents of the University of California, Lawrence Berkeley National Laboratory
VTA’s BART Silicon Valley Extension Program (BSV) will expand BART service into Santa Clara County and is being built in two phases. Phase I (Complete) extended service from Alameda County into Santa Clara County. Learn more about Phase I here. Phase II (Currently in design and engineering) will extend service from the Berryessa Transit Center to the end of service in Santa Clara. For Phase 2, JMA has completed the early works design for the West Portal project where a 5-mile-long bored single bore tunnel will extend from Berryessa/North San Jose station, through downtown San Jose along Santa Clara St, to the proposed Newhall Maintenance Facility. JMA supported the prime contractor with site grading and drainage, utility design, QA/QC, and the preparation of the Construction Transportation Management Plan (CTMP). Additionally, JMA prepared a system-wide Basis of Design report for the West Portal, Diridon Station, Downtown San Jose Station, 28th Street Station, and East Portal, and led construction support for the enabling works. Design was completed in 2023, and the West Portal groundbreaking took place in June 2024. Photo provided by VTA at https://www.linkedin.com/posts/vta_construction-milestone-groundbreaking-activity-7207514146257424384-p8Jp?utm_source=share&utm_medium=member_desktop
Beginning in 2013, JMA was engaged by Lawrence Berkeley National Laboratory (LBNL) to evaluate observations and survey data of significant movement along a section of the retaining wall supporting Alvarez Road. JMA, supported by its geotechnical partner A3GEO, collaborated closely with LBNL Facilities staff and its survey and other consultants to identify, evaluate and prepare concepts for alternatives for the rehabilitation of the retaining wall. A tie-back solution along a 150’ section of the wall was determined to be most feasible and cost effective. JMA led and participated in numerous meetings, and prepared exhibits and schematics for each, supporting LBNL’s engagement of internal stakeholders, cost estimating, and preparation of the project funding request. Significant design considerations included limiting access and other impacts at the project site–a critical transportation pinch point at LBNL– during construction, and identifying, mapping, and avoiding the complicated array of subsurface facilities behind the wall. JMA subsequently led the multi-disciplinary team, including structural and geotechnical partners, to prepare the final construction documents and project manual for the project. Due to the high-profile nature of the project, several rounds of design reviews were conducted with LBNL stakeholders to ensure all relevant input and coordination was obtained. During construction, the JMA team provided extensive construction observation, testing, and design support of the contractor’s activities. When a significant utility was impacted during construction, JMA led a rapid response to identify the issue, develop solutions, and obtain the input and consideration of LBNL to quickly implement the solution.
JMA supported the prime consultant with the associated civil design for an approximate 1,264 square foot extension of Lawrence Berkeley National Lab’s Building 77A to accommodate new equipment. Scope of work included demolition plans, relocation of an existing storm drain within the proposed footprint of the extension, a new electrical conduit running along the north side of Building 77 to serve the building, and typical site civil details for grading, access and striping. Design was completed in 2018 and JMA provided bid and construction phase services for successful project construction completion in 2023.
UC Berkeley maintains a 115 kV substation on the Lawrence Berkeley National Laboratory campus that is supported by two taps, known as Platforms 1 and 2. As prime consultant, JMA led the design to channelize runoff away from the platform foundations to repair the existing eroded condition. JMA prepared multiple alternatives for the erosion mitigation improvements which included new catch basins for runoff, grading and drainage and cost estimates. JMA’s scope covered new pavement, signage and striping and new fencing, gates and barriers. Additionally, JMA led design review meetings with UCB and LBNL and provided construction support services. The project finished construction in 2022.
The National Energy Research Scientific Computing Center (NERSC) is the primary scientific computing facility for the Office of Science in the U.S. Department of Energy and a division of Lawrence Berkeley National Laboratory (LBNL). JMA is leading the site civil design for the NERSC improvements at LBNL which includes site grading and drainage design and utility design to support a new state-of-the-art heat exchanger and switchgear structures. The structures are both located on undeveloped slopes with challenging infiltration and stability constraints. JMA is collaborating closely with LBNL and structural engineer in value engineering to optimize earthwork volumes. Additionally, JMA is leading the design for two hydromodification tanks to mitigate increased runoff from the new development. Final design was completed in 2024 and the project is currently in construction.
As part of its Desert Winds development, Clark Realty Capital proposed to demolish existing houses at the Fallon Naval Air Station and construct 150 new houses to allow more sailors and their families to live on-base. The Prime engineer was engaged by Clark Realty to develop recommendations for the cut and cap of the existing dry utilities service (electrical, communications, natural gas) and reestablishment of new dry utilities service for the planned development. Supporting this task, JMA coordinated the natural gas scope and performed the required investigations needed to understand existing conditions for recommendations for the existing and proposed natural gas service. JMA led associated field investigations, prepared an existing conditions and recommendations report and prepared a Class 5 cost estimate for the project. Construction of the housing development was completed in 2018. Photo credit to Gallery & Virtual Tour | Desert Winds (livelmh.com)
JMA has provided on-call civil design and project management services for various projects at Lawrence Berkeley National Laboratory (LBNL) since our inception in 2011. One of JMA’s first projects at the Lab was project management and design of a new high-speed bi-fold security gate system and related road widening that included inbound and outbound pedestrian and bike lanes and lighting and electrical improvements.