16 Projects

Storrow Drive Interchange Tunnels Boston

Storrow Drive Interchange/Tunnels

Boston
,
MA

Storrow Drive, a parkway along the Charles River in Boston, carries more than 100,000 vehicles per day. The tunnels provide access to city streets, and are constructed of reinforced concrete...

John R. Oishei Children’s Hospital

Buffalo
,
NY
Project Contacts:

The 185-bed John R. Oishei Children’s Hospital replaces the city’s 125-year-old Women and Children’s Hospital of Buffalo. With a focus on patient and family comfort, the new 440,000 sq ft hospital...

Minera Escondida, Organic Growth Project 1, Tunnel 4

Atacama Desert
,
Chile
Project Contacts:

Expansion of the Minera Escondida copper mine included constructing a corrugated steel structural plate arch tunnel. The tunnel acts as a buried bridge to carry a haul road over the mine’s...

Bingham Canyon Mine

Salt Lake City
,
UT
Project Contacts:

A conveyor belt runs along one of the canyon benches at the copper mine. The upper slope of the canyon was undergoing a slow and predictable landslide transverse to the conveyor belt. To protect...

Greenway Carousel Boston, MA

Greenway Carousel

Boston
,
MA
Project Contacts:

The Central Artery/Tunnel Project moved one of Boston’s major elevated highways underground and created usable ground-level spaces, such as the Rose Kennedy Greenway. The Rose Kennedy Greenway...

MTA South Ferry Terminal New York

MTA South Ferry Terminal

New York
,
NY
Project Contacts:

SGH served as a special consultant to Metropolitan Transit Authority (MTA) Capital Construction to help them with concrete and waterproofing issues at their facilities. As part of our work, SGH...

1100 Broadway Oakland

1100 Broadway

Oakland
,
CA
Project Contacts:

The 1100 Broadway project combines the adaptive reuse of the Key System Building, which was heavily damaged in the 1989 Loma Prieta earthquake, with the construction of a new twenty-story building...

Storrow Drive Tunnel Testing, Monitoring, and Rating Boston

Storrow Drive Tunnel Testing, Monitoring, and Rating

Boston
,
MA
Project Contacts:

Constructed in the 1950s and carrying over 100,000 vehicles per day, the Storrow Drive Interchange is a major commuting route and link to Back Bay.  The interchange includes two reinforced...

Central Artery Tunnel Project Leakage Investigation Boston

Central Artery Tunnel Project Leakage Investigation

Boston
,
MA
Project Contacts:

The Central Artery/Tunnel (CA/T) Project relocated Boston’s elevated Central Artery below ground.  Systemic water leakage at the tunnel roof to slurry wall intersection created a long-term...

Suspended Concrete Ceiling Removal over Massachusetts Turnpike

Boston
,
MA

Portions of the Hynes Convention Center (Hynes) are located directly over I-90, the Massachusetts Turnpike.  A fifty-year-old, cast-in-place concrete slab suspended from the underside of the Hynes...

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