Case

Studies

GRL Engineers offer a wide range of deep foundation testing and consulting services, nationwide. Most GRL Engineers have achieved Advanced Level or higher on both the PDCA/PDI Dynamic Measurement and Analysis Proficiency Test.

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Pensacola Bay Bridge

The U.S. 98 Pensacola Bay Bridge replacement project began in 2017 to address hurricane evacuation traffic needs. The replacement required PDA Testing on test piles and production piles. Data was assessed via CAPWAP® data analyses to provide simulated static load testing. Hurricane Sally interrupted construction in 2019, and potential damages to production piles were assessed using Low Strain Integrity Testing. Read more
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Toombs County Bridge Replacement over the Altamaha River

GRL performed Drilled Shaft Verticality Assessment, Shaft Base Cleanliness Assessment, as well as Bi-Directional Static Load Testing (“BDSLT”) services. A multi-level jack assembly configuration increased the complexity of shaft installation requirements, load test execution, and test data analyses. Thermal Integrity Profiling was also utilized during concrete curing to measure thermal data every 15 minutes. Read more
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I-77 Canton Bridge Structures

The large aquifer in Canton, OH presented multiple drilled shaft installation challenges on the I-77 mainline bridge structures. GRL Engineers were involved in mulitple phases of construction, providing a variety of testing services including Dynamic Load Testing with an APPLE drop weight system, CAPWAP® Analyses to simulate static load testing, Drilled Shaft Base Cleanliness Evaluations, Thermal Integrity Profiling, and Static Load Testing on CFA piles. The project was considered monumental as it was the Ohio DOT's first time utilizing Dynamic Load Testing on a CFA pile. Read more
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Mukilteo Multimodal Ferry Terminal
In this case study, GRL Engineers performed Crosshole Sonic Logging and Pile Driving Monitoring on the replacement terminal for the Mukilteo Ferry in Mukilteo, Washington. This terminal replacement project included important collaboration between government and local Native American tribes.
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Tri-State Tollway Mile-Long Bridge

In 2020, GRL Engineers were contracted to perform testing on the  Mile-Long Bridge located in Willow Springs, Illinois. Various testing methods were performed to assess the concrete integrity including Crosshole Sonic Logging, Thermal Integrity Profiling, and Data Analyses. 

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North Madison Substation

GRL Engineers took on an investigative project on the North Madison Substation in Wisconsin, to analyze acceleration and stresses in non-uniform piles during vibratory driving. The test involved Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA) and the PDI-VIB Program. 

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1100 Broadway Avenue in Oakland

GRL Engineers were contracted to perform Dynamic Pile Monitoring with a Pile Driving Analyzer (PDA) and collect high-strain dynamic measurements using APPLE Load Testing. A CAPWAP Analysis was performed using the collected test data. 

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Milwaukee 7Seventy7 Apartments
GRL Engineers performed testing on 10 test piles for the Milwaukee 7Seventy7 apartments. Services provided included Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA), CAPWAP Analysis using collected pile test data, and Static Load Testing.
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Harbor River Bridge
The Harbor Bridge replacement project used GRL Engineers services for quality assurance testing. The test shafts were assessed using Drilled Shaft Verticality Evaluations, along with Drilled Shaft Cleanliness Evaluations of debris thickness at the shaft base.
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New Jersey Floodwall
GRL’s services for the Hurricane and Storm Damage Reduction Project included completing a multitude of Preliminary GRLWEAP Analyses which included Bearing Graph and Driveability analyses. In addition, Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA) and CAPWAP Analysis were performed.
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Cairo Bridge over the Fork Hughes River
Due to environmental factors, there was a need for foundation testing at the Cairo bridge in West Virginia. GRL Engineers performed Drilled Shaft Cleanliness Evaluations onsite to determine debris thickness at the shaft base, and Drilled Shaft Verticality Evaluations. Additionally, Crosshole Sonic Logging was performed to assess concrete quality.
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SR-19 Over Little Lake Harris Bridge
The third iteration of the Little Lake Harris Bridge utilized foundation testing for quality assurance. GRL Engineers performed Dynamic Pile Monitoring on 210 piles using a Pile Driving Analyzer (PDA) and CAPWAP Analyses. This level of testing was utilized to meet comprehensive design specifications.
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Russell Street Bridge
The existing 2-lane Russell Street Bridge in Missoula, Montana, a major highway with high traffic volume, was in need of reconstruction. GRL was contacted to perform Bi-Directional Static Load Testing on a representative test shaft. Additionally, Thermal Integrity Profiling was performed on the test shaft to assess concrete integrity.
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Norfolk Southern Railroad
The Great Lakes Construction Company was awarded the contract to replace the Norfolk Southern Railroad Bridge over the Grand River in Painesville, OH. GRL Engineers, Inc. provided Drilled Shaft Cleanliness Evaluations onsite to assess debris thickness at the shaft base.
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Tappan Zee Bridge
Services for the Tappan Zee Bridge included completing a multitude of Preliminary GRLWEAP Analyses for hammer selection, Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA) on 36 to 48-inch diameter, open-end pipe piles, performing Crosshole Sonic Logging and Thermal Integrity Profiling on 48 to 96-inch diameter drilled shafts.
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Corpus Christi Export Terminal
The Corpus Christi export terminal was permitted for a regasification terminal. GRL Engineers performed Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA), SiteLink Remote Testing, Crosshole Sonic Logging, Thermal Integrity Profiling and Pile Integrity Testing on test shafts for the terminal foundation.
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Veterans Memorial Bridge
The Tom Staed Veterans Memorial Bridge, also known as Orange Avenue/Silver Beach Avenue Bridge, used GRL Engineers to assess foundation performance. Testing services included Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA), along with specialized consultation.
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Washington Port of Tacoma
GRL Engineers performed testing on selected piles at the Port of Tacoma site. The services provided included Preliminary GRLWEAP Analysis, Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA) and CAPWAP Analysis.
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Bonner Bridge
When the damage of multiple hurricanes led to a bridge replacement in North Carolina, GRL Engineers performed testing on the production piles for the new foundation. Testing services included Static Load Testing and Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA).
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Kentucky Lake Bridge
The  Kentucky Lake Bridge, undertook a series of tests to address lateral loads from potential boat impacts. GRL Engineers used quality assurance testing to determine the strength of the pier's foundation. Testing included Preliminary GRLWEAP Analysis, Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA) and CAPWAP Analysis.
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SR 36 Bridge over Tuscarawas River
GRL was contracted to consult on hammer selection using Preliminary GRLWEAP Analysis, pile wall thickness, and Static Load Testing for the SR 36 bridge over the Tuscarawas River in Gnadenhutten, OH. In addition, GRL provided Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA).
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I-90 Innerbelt Bridge
Cleveland’s Innerbelt Bridge was completed in two design-build phases and was the first design-build project for the OH-DOT. GRL performed Preliminary GRLWEAP Analysis, Dynamic Pile Monitoring using a Pile Driving Analyzer (PDA), APPLE Load Testing, Crosshole Sonic Logging and Thermal Integrity Profiling Services on the bridge.
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