With the SR 520 Floating Bridge and Landings Project, the Washington State Department of Transportation replaced the existing floating bridge, also known as the Governor Albert D. Rosellini or Evergreen Point Floating Bridge, over Lake Washington...
The Brooklyn Basin project revitalizes 65 acres along Oakland’s waterfront, transforming an industrial site into a mixed-use development. The new neighborhood offers more than 3,000 residences, public parks and trails, a new marina, and 200...
The aging marine oil terminal exceeded its design life and did not comply with the applicable seismic and berthing standard. The port, the ultimate owner of the marine structures, and the terminal operator undertook a project to replace the...
Authorized by the Second Congress and President George Washington, construction of the Montauk Lighthouse at the eastern end of Long Island was completed in 1796. The octagonal lighthouse suffered from chronic leakage and numerous repairs...
During the six-year rehabilitation of the Brightman Street Bridge, SGH provided investigation and concrete design services and performed testing, analysis, and thermal modeling of mass concrete placements.
The 1,900 ft long timber-framed approach trestle exhibited damage and deterioration due to aging and required repairs to maintain the function and structural integrity. SGH developed a comprehensive rehabilitation plan that allowed the...
Originally built in the 1950s, the timber terminal was becoming increasingly costly to maintain and was no longer considered fit-for-purpose for seismic and berthing requirements. Instead of embarking on an incremental improvement program,...
The existing fender systems at two berths of a refinery terminal were significantly deteriorated. SGH was the engineer of record for the design of a replacement fender system. We developed an innovative modular design that could...
During the spring of 2013, SGH investigated two hard tugboat allisions (collisions with fixed objects such as bridges or docks), at separate marine oil terminals. In both cases, the tugs were maneuvering their respective barges when they...
SGH was the engineer of record for the seismic retrofit design of two 450 ft long wharf structures that required strengthening to comply with the MOTEMS seismic performance standards for marine oil terminals in the state. SGH developed an...
This paper will describe a $16M rehabilitation program of a 1960’s vintage, reinforced concrete marine oil terminal at the Port of Long Beach intended to enhance the performance and operational life of this critical infrastructure. The...
Berthing velocities for design of fender systems have long been based on old and incomplete data, often from studies dating as far back as the 1950s. Both PIANC and MOTEMS continue to use values based on these old datasets in their...
The wharf at the Fore River Shipyard was built for shipbuilding circa 1960; recently, it was home to the USS Salem, a permanently-moored retired US Navy heavy cruiser that served as a museum. True to its intended purpose, the wharf is a robust...
The Port of San Francisco is a historic urban waterfront supporting a variety of businesses, transportation, tourism, and more. As part of a large rehabilitation project, the Port is performing a Port-wide multi-hazard risk assessment, which...
A $5B program is underway at the Port of San Francisco to strengthen or replace the three mile long seawall. Part of the program is a multi-hazard risk assessment, evaluating the consequences of flooding due to sea level rise and earthquake...
In performance-based seismic design, a marine structure is designed for inertial loading effects associated with the dynamic response of the structure. Some waterfront structures also experience seismically induced kinematic effects, associated...
Brooklyn Basin is a multi-billion-dollar real estate development of the former Port of Oakland 9th Avenue Terminal located along the Oakland Estuary. The centerpiece of the development is the 10 acre shoreline park which includes a 1,200 foot...
Located in harsh marine environments, coastal and waterfront developments require special attention to improve resilience over the project’s design life. Material selection, siting questions, protective coatings, waterproofing detailing, and drainage are all important considerations for the design team.