ENR California assembled a group of judges with varying specialties and expertise in the construction industry to review, score and determine the winners of ENR's annual Regional Best projects competition.
The $11-million project to raise Hell Hole Dam in Foresthill, Calif., was never going to be easy. Built in 1966, the earth-and-rock embankment dam impounds two rivers to form Hell Hole Reservoir in a rugged, remote location.
To remediate seismic safety issues and enhance flood-handling capacity at the concrete thin-arch dam, the $32-million project called for cutting a notch in the existing structure, placing a new ogee-shaped spillway and installing reinforced armor at the dam’s base.
As part of the replacement of a critical bridge serving the ports of Los Angeles and Long Beach, the project team developed a strategy to install two 2.1-million-lb precast concrete bridge fenders to safeguard the structure from vessel impacts.
Located north of the library’s existing exterior wall, the 3,200-sq-ft addition creates space for children to learn, read and interact with parents and peers while preserving views of the neighboring Sweetwater River valley.
Precision was a critical component for the first phase of the Vantage Data Centers campus in Santa Clara, Calif. From the clean, geometric designs to the prefabricated materials and careful placement of every light switch and alarm strobe, the two four-story buildings are precisely calibrated for maximum efficiency.
As an integral part of the historic Greystone Mansion, a 34-seat former motion picture theater underwent a face-lift to restore its distinctive interior design with 21st-century acoustics and audiovisual systems.
Built in 1893, San Francisco’s Market Street Railway powerhouse was once the country’s largest electrical generating facility. The historic brick building that powered the city’s first streetcar has now gone to the dogs, cats and other small animals as the city’s Animal Control and Care facility.
The new 10-acre waterfront retail center boasts outdoor plazas, patio dining and more than 90,000 sq ft of retail, boutiques, restaurants, a bank and marine office space, all clad in a variety of modern architectural motifs.
Students at the independent college prep school received a unique lesson in construction planning and execution via the complex three-phase project that brings the historic campus into the 21st century.
Even under the best conditions, the condensed 22-week timeline to convert a former pen manufacturing plant into the app-based health care company’s new 76,000-sq-ft headquarters would have been challenging.
Close preconstruction collaboration between Caltrans and the project team yielded a host of cost-saving innovations that helped reduce the budget by nearly $40 million while also helping expedite the process of elevating SR 58 across U.S. Route 395 and an adjacent freight rail line.
Taking advantage of reduced traffic volumes resulting from statewide pandemic-related closures, the project team and Caltrans partnered to fast-forward this complex deck replacement on a Bay Area artery that typically handles nearly a quarter-million vehicles each day.
Created to provide a nexus for filmmaking and computational media, the facility features media labs, classrooms, experimental content creation space, a sound stage, post-production editing suites and a 100-seat Dolby Atmos screening theater.
The three-story, 36,000-sq-ft academic building provides a much needed new home for the college’s growing computer science department as well as a permanent makerspace. Unlike traditional campus structures, the building is a physical embodiment of the college’s forward-looking culture.
Pursuing LEED Gold accreditation and delivered via progressive design-build, the innovative $96-million, 115,000-sq-ft building is a long-awaited athletics and educational resource for the college and surrounding community.
Overcoming potential delays ranging from steel fabrication and permits to wildfires and the global pandemic, the three-level facility was substantially complete just two years after construction began.
This laboratory challenges the traditional sterile aesthetic of research facilities by combining three warehouses into a single incubator lab, augmented by a three-story addition. The complex MEP system addresses specific operational requirements for offices and labs.
Construction on the 37,000-sq-ft building was on track for early completion in mid-March 2020 when COVID-19 shelter-in-place (SIP) orders brought work to a screeching halt. Yet within 48 hours, the project team was ready to safely resume work, deploying protective equipment and new safety protocols that, under normal circumstances, might have required several weeks to plan and implement.
Despite initial concern that the project might be vulnerable to as much as $1 million in cost overruns, the two-phase, $36.5-million construction program was ultimately completed under budget thanks to innovative value engineering and negotiated change order requests.
The $344-million, five-story connection between Terminals 1 and 2 provides nearly 240,000 sq ft for ticket counters, baggage carousels, a bus gate and an additional screening checkpoint as well as a vertical circulation core that will connect with LAX’s future automated people mover.
The relocated Patsaouras Bus Plaza provides LA Metro’s transit users easier connections to bus lines serving Union Station. By widening both sides of the 30-year-old El Monte Busway Bridge, the project team created a 200-ft-long, 18-ft-wide concrete platform with benches, ticket machines and wayfinding kiosks, all covered by a steel canopy.