Heavy Loads

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Shore Line Bridge Replacement

Boston, MA

Project Contacts: Rosalind Imbaro

Originally constructed in 1898, the Shore Line Bridge carries the Massachusetts Bay Transportation Authority (MBTA) commuter rail and CSX freight lines over Amtrak’s Northeast Corridor. MBTA needed to replace the existing steel through-...

Services:Structural Investigation

Markets:Bridge

Keywords:Bridge, Railroad, Construction Consulting, Construction Engineering, Heavy Loads

Railroad Bridge over Otter Creek

Pittsford, VT

Project Contacts: Rosalind Imbaro, Aaron Lewis

Vermont’s Agency of Transportation was undertaking the rehabilitation of Bridge 219 over Otter Creek. As part of this project, Engineers Construction, Inc. (ECI) needed to replace distressed stone-masonry pier with a new reinforced concrete...

Services:Structural Design

Markets:Bridge

Keywords:Bridge, Railroad, Construction Consulting, Construction Engineering, Heavy Loads

Storrow Drive Tunnel Testing, Monitoring, and Rating

Boston, MA

Project Contacts: Rosalind Imbaro

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 concrete tunnels with steel-framed and reinforced...

Services:Structural Rehabilitation

Markets:Highway & Tunnel

Keywords:Concrete, Heavy Loads, Monitoring, Structural Adequacy Assessment, Tunnel

University of Notre Dame, Nuclear Science Laboratory, Ion Accelerator Enclosure

South Bend, IN

Project Contacts: Dominic Kelly

Working for the University of Notre Dame, SGH completed a feasibility study (Phase 1) to determine how to support and enclose a 5 MV vertical ion accelerator over an existing physics laboratory. The accelerator, weighing about 24,000...

Services:Structural Design

Markets:Education - College & Prep

Keywords:Addition, Concrete-Precast, Dynamic/Vibration, Feasibility Study, Heavy Loads, Laboratory, Machines and Equipment, Structural Adequacy Assessment

Central Artery/Tunnel Project Slurry Walls

Boston, MA

Project Contacts: Paul Kelley, Matthew Sherman

The Central Artery/Tunnel (CA/T) Project relocated Boston’s elevated Central Artery below ground. The CA/T tunnel walls used soldier pile tremie concrete (SPTC) slurry walls as a component of the final structure. During later stages of...

Services:Materials Investigation, Materials Rehabilitation, Structural Rehabilitation

Markets:Highway & Tunnel

Keywords:Civil, Concrete, Demolition, Field Testing, Heavy Loads, Laboratory Testing and Analysis, Tunnel

Crystal River Nuclear Power Plant Unit 3, Drop Load Analysis

Crystal River, FL

Project Contacts: Mehdi Zarghamee

The Crystal River Nuclear Power Plant, Unit 3, is part of a 4,700 acre energy complex that contains a 914 MW pressurized water reactor. When the client planned rigging operations for replacement of a steam generator at Unit 3, they required an...

Services:Structural Investigation

Markets:Nuclear

Keywords:Buried, Cracking, Finite Element Analysis, Heavy Loads, Mechanical/Electrical System, Pipeline, Power, Soil-Structure Interaction

Space Surveillance Telescope Lifting Project

White Sands, NM

Project Contacts: William Konicki

The Defense Advanced Research Projects Agency Space Surveillance Telescope (SST) has a 3.5 m dia. primary mirror with large, curved, focal surface array sensors. The device offers a wider view of deep space objects to support broad-area searches...

Services:Structural Investigation

Markets:Science & Defense

Keywords:Heavy Loads, Laboratory, Machines and Equipment, Telescope

Electronic Space Systems Corporation, Compact Range Reflector

Ft. Huachuca, AZ

The Electronic Space Systems Corporation and Georgia Tech Research Institute sought to construct a highly accurate compact range reflector at the U.S. Army Electronic Proving Ground that would maintain a surface accuracy of 0.007 in. rms under...

Services:Structural Design

Markets:Science & Defense

Keywords:Analytical Studies, Construction Engineering, Foundation, Heavy Loads, Structural Strengthening

Neponset River Bridge

Boston-Quincy, MA

Project Contacts: Atis Liepins

Opened in 1971, Neponset River Bridge carries Morrissey Boulevard traffic over Neponset River. The superstructure consists of steel plate girders and cover-plated steel stringers supporting a 7.5 in. thick reinforced concrete deck. The girders...

Services:Structural Rehabilitation

Markets:Bridge

Keywords:Cracking, Finite Element Analysis, Heavy Loads, Structural Adequacy Assessment