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Q-Bridge Memorial and Sarah Mildred Long Bridges

Construction phase CSL testing services for 8 to 10 feet diameter drilled shafts. GTR also provided Mini SID inspection of the bottom of the sockets for Q-bridge. For the Q-bridge project, challenging aspects involved assessing time dependent changes in pile capacity for the PPC piles and investigating the concrete placement techniques for the large diameter shafts. Provided remediation design for a Q-bridge drilled shaft which included hydro demolition, pressure grouting and Tomography. For Sarah Long bridge GTR also provided low strain integrity testing.

Sakonnet River Bridge

Design, load testing and construction phase consulting for complex pile foundations of a multi span 2850 feet long river crossing. The bridge was the first significant LRFD designed structure in the New England area. The design phase program involved static and dynamic load testing on H-piles and large diameter pipe piles with capacities in excess of 6000 kips. An innovative solution was developed by GTR for the large diameter pipe piles that forced plugging and increase pile capacity, and in turn, significantly reduced the pile lengths compared to originally designed open pipe piles. The innovative design, its verification in load-test and construction had resulted in a very large cost savings. The construction phase services including testing on every large diameter pipe pile over various stages of installation, modeling and acceptance evaluation.


Steamship Authority Terminal Reconstruction

Design and construction phase services to test and develop driven Spin Fin pile foundations. The project was the first permanent use of Spin Fin piles on the East Coast of the U.S. The Spin Fin piles were used to reduce pile lengths for end bearing and uplift loading conditions as compared to significantly longer traditional pipe pile foundations.

I195/I95 Improvements/ Providence River Bridge

Deep foundation design and pile load test program services. Testing involved tensile, lateral, compressive static load tests and dynamic load tests of numerous pile types driven in the difficult Providence Varved Silts. Additonally, vibration monitoring was performed to asses pile type and distance on surrounding structures. The results of the test program have been and are currently being used as the benchmark reference for future foundations in the Providence area. GTR also performed large scale instrumentation of the Providence River Bridge to measure strain and assess loads on the bridge arch and beam structures during various phases of bridge construction. The results of the instrumentation program were used to calibrate the bridge model to determine the cable tensioning requirements. The Data Acquisition System included 14 different multiplexers connected via wireless data loggers.

Em Hamoshavot Bridge, Netive-Ayalon, Israel


Design and installation of vibrating wire settlement monitoring system as well as load, moment and inclination measurements of drilled foundation for monitoring future tunnel excavation. System to operate on line for five years.


Falmouth Cruise Terminal

GTR provided foundation consulting and dynamic pile testing services for large diameter pipe piles for a bulkhead, pier structure, and dolphins. Time dependent changes in pile capacity were investigated.

Other Notable Projects

Woodrow Wilson Bridge - Alexandria, VA

Wynn Casino Development  - Everett, MA

Goethals Bridge Replacement  - Staten Island, NY ô€‚±Elizabeth, NJ

Sarah Long Bridge - Portsmouth, NH   Kittery, ME

Tappan Zee Bridge Replacement - Tarrytown, NY

Reconstruction of Rte 18 - New Brunswick, NJ

Wittpnn Bridge Replacement  - Jersey City, NJ

Gilmerton Bridge - Chesapeake, VA

Boston Convention Center - South Boston, MA

Angola LNG Plant - Soyo, Angola

Partners Health Care Corporate Headquarters - Somerville, MA

MD 200 (Intercounty Connector) Design-Build Project - Silver Springs, MD

350 South Street Residential Development -  Manhattan, NY

Moses Wheeler Bridge Replacement - Milford-Stratford, CT

Brayton Point Nuclear Power Plant - Somerset, MA

Mill Basin Bridge Replacement - Brooklyn, NY

Falmouth Cruise Terminal - Falmouth, Jamaica, MA

Central Artery/Tunnel Project - Boston, MA

Sky View Park - Flushing, NY

ADDRESS

Geosciences Testing and Research Inc.

55 Middlesex St Suite 225
North Chelmsford, Ma 01863

Foundation Engineering Services DPC.
4 Old Route 6
Brewster, NY 10509

CONTACTS
Email: info@gtrinc.net
Phone: 978-251-9395
Fax: 978-251-9396

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