Infrastructure : GeoStructural Engineering For more information, contact infrastructure@wai.com. Filter Projects By Infrastructure Type View All Infrastructure Types View Airports and Marine Structures View Subways and Mass Transit View Roadways, Site, Utilities View GeoStructural Engineering 2006   191st Street Tunnel New York, New York NYC Department of Transportation WAI Prime Construction support services for 191st Street tunnel at Seventh Avenue.      Central Artery C17A6 - I-93 Kneeland Street to Charles River Boston, Massachusetts Massachusetts Turnpike Authority Modern Continental Structural and geotechnical engineering for construction of 2 new 1,250-foot-long mainline cut-and-cover tunnels, including viaduct demolition and surface restoration.      Harvard University - Laboratory for Integrated Sciences and Engineering (LISE) Cambridge, Massachusetts Harvard University East Coast Slurry Company Slurry wall for Harvard's first laboratory for interdisciplinary nanoscience research and incubator for scientific innovation. Two-thirds of structure underground. 2005   Central Artery D18A1 - I-93 Congress to Kneeland (Southbound) Boston, Massachusetts Massachusetts Turnpike Authority Edwards & Kelcey/WAI (JV) Improvement of highway tunnel under Dewey Square to meet current interstate highway standards. New tunnel construction of 300 feet.      Harvard University - Oxford Street Garage Cambridge, Massachusetts Harvard University Arrowstreet Award-winning 5-level, below-grade 650-car garage in new campus area. Top-down construction, designed to accommodate future building above.      US Capitol Visitor Center Washington, DC Architect of the Capitol RTKL Associates Geotechnical services for 3-level, 50-foot-deep excavation with combined footprint of approximately 250,000 square feet. 2004   MBTA Transitway - Silverline Tunnel Slurry Wall Boston, Massachusetts Massachusetts Bay Transportation Authority JF White Design of support of open-cut-excavation slurry wall system, 120 feet wide and 55 feet deep. For tunnel built under soft-clay conditions. 2003   60 Oxford Street Soil Mix Wall Cambridge, Massachusetts Harvard University WAI Prime; ICOS Corp of America - TreviIcos Design of soil mix wall to support temporary excavation for 31-foot-deep underground structure. Finite-element analysis for shared-wall construction sequence.      Central Artery C15A1 - North to Chardon Streets Boston, Massachusetts Massachusetts Turnpike Authority JF White/Slattery/Perini (JV) Temporary decking and support of open-cut excavation for construction between North and Chardon Streets. Jacking sequence for underpinning of elevated artery. VECP finite analysis.      Central Artery C15A2 - Northbound and Southbound Tunnels Boston, Massachusetts Massachusetts Turnpike Authority WAI Prime; Cashman/Kiewit/Atkinson (JV) Temporary support of excavation and temporary street decking to accommodate permanent Central Artery tunnels and maintain traffic flow. Slurry wall construction.      Eleventh Avenue Underpass Slurry Wall Nampa, Idaho Idaho Department of Transportation WAI Prime Monitoring of slurry wall construction for highway-widening under railroad tracks, including constructability review and approval of procedure variations due to site conditions.      Merck Research Center Construction Boston, Massachusetts Merck & Company ICOS Corp of America - TreviIcos Construction engineering for temporary structures, bracing, crane support, and slurry walls for 5-level underground parking. Modified top-down construction.      MIT - Stata Center Excavation Cambridge, Massachusetts Massachusetts Institute of Technology WAI Prime Slurry wall and support of excavation design for contractor. 2002   Cambridge Research Park Garage Cambridge, Massachusetts LYME Properties William A Berry & Son Four-level parking garage to support hotel, apartment, and office buildings. First-ever Geo-Jet retaining wall installed on East Coast.      Central Artery C01B1 - Vent Building #5 Superstructure Boston, Massachusetts Massachusetts Turnpike Authority Chisholm Washington Architects Design of building to house supply and exhaust fans for buried tunnel section that runs beneath it. Coordination with tunnel designers. BOCA 1993 seismic requirements.      Central Artery C17A3 - Vent Building #3 Boston, Massachusetts Massachusetts Turnpike Authority FST/HNTB (JV) Design of ventilation building.      Central Artery C18A2 - Air Intake Structure Boston, Massachusetts Massachusetts Turnpike Authority Edwards & Kelcey/WAI (JV) Mechanical/electrical building constructed over existing tunnel south of Congress Street, phased with CA/T D018A1 Dewey Square tunnel renovation.      MWRA FRSA Shaft Weymouth, Massachusetts Massachusetts Water Resource Authority (MWRA) ICOS Corp of America - TreviIcos Design of temporary steel casing for Fall River Shipyard Area (FRSA) access shaft to serve as temporary support of excavation during tunnel construction.      Waste Water Treatment Cofferdam Warwick, Rhode Island City of Warwick Sewer Authority WAI Prime Design of slurry walls for 2 cofferdams, each 80 feet in diameter and 58 feet deep. 2001   Central Artery C11A1 - I-93 Northbound Tunnel (Atlantic Avenue) Boston, Massachusetts Massachusetts Turnpike Authority WAI Prime; Perini/Kiewit/Cashman (JV) Construction engineering and advanced soil/structure analysis of excavation support for more than 2,000 linear feet of tunnel using slurry diaphragm walls on sensitive site.      Life Science Building GeoJet Wall Cambridge, Massachusetts Harvard University ICOS Corp of America - TreviIcos Design of economical earth support system using GeoJet (soil-mix) wall for temporary support of excavation with minimal impact on adjacent structures. Finite-element analysis.      Ohio State - Horseshoe Stadium Slurry Wall Columbus, Ohio Ohio State University Osborn Architects & Engineering Design of cantilevered slurry wall for renovation of 75-year-old Horseshoe Stadium.      One Lincoln Street Slurry Wall Boston, Massachusetts Gale & Wentworth WAI Prime; ICOS Corp of America - TreviIcos Design of perimeter slurry walls and cross-lot bracing for 55-foot-deep excavation of underground parking structure built next to old brick buildings.      Russia Wharf Settlement Analysis Boston, Massachusetts Massachusetts Bay Transportation Authority WAI Prime; Modern Continental Field inspection and finite-element study of effect of CA/T and MBTA excavations on historic complex structure due to depressurization of glacial till and blue clay soil stratum. 1999   Central Artery C09A4 - Ramp D Thrust Pit Slurry Wall Boston, Massachusetts Massachusetts Turnpike Authority Slattery Interbeton/JF White/Perini (JV) VECP for thrust pit resulting in change of design to post-tensioned slurry wall and long-span space truss as wall bracing elements.      Central Artery C09A4 - Ramp L Tunnel Boston, Massachusetts Massachusetts Turnpike Authority Slattery Interbeton/JF White/Perini (JV) VECP for tunnel in Fort Point Channel. Change of design to slurry wall, top-down construction to eliminate cross-lot bracing. Deep excavation of 45 feet. Design-build.      Central Artery C09A4 - Tunnel Construction Excavation Support Boston, Massachusetts Massachusetts Turnpike Authority Slattery Interbeton/JF White/Perini (JV) Design and analysis for Installation of high tunnel sections on congested active site. Largest section ever jacked in the US. ACEC/MA Grand Conceptor Award.      Central Artery C17A2 - I-93 State to North Streets Boston, Massachusetts Massachusetts Turnpike Authority Modern Continental/Obayashi (JV) Development of top-down construction method for 70-foot-deep, 915-foot, 8-lane tunnel section. Design of traffic decking for heavy equipment, north and south bulkhead walls.
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