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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Southwest Florida International Airport Expansion

Challenge: The Southwest Florida International Airport in Fort Myers Florida underwent a $1.1 Billion expansion in the second phase of the airport’s reconstruction project. The airport expansion was an effort to accommodate an expected growth in passenger traffic, and was led by the Lee County Port Authority. The first phase of the project was a $331 million expansion on the airport terminal. The second phase of this project looks to…
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Extensive Load Test Drilled Shaft Program with Integrity Assessments

Challenge: A project in Ohio for a large plant was initiated in 2023. A substantial test program was established. The goal of the program was to confirm the shaft design in compression, tension, and lateral capacity, as well as establish proper shaft installation techniques for production shafts. Integrity testing was used to identify potential anomalies in the concrete shafts. Method: The job was divided into three test locations, which each…
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Barrette Integrity Measurements for High Rise Construction in Paraguay

Challenge: A 55‑story residential tower in Asunción required measurement of concrete integrity for deep barrette foundations installed within a constrained urban site. The foundation system consisted of 44 barrettes, each approximately 36 to 40 meters in length. The size of the reinforcement cages, combined with limited site access, required an integrity evaluation approach that could be implemented efficiently during construction while minimizing risk to instrumentation and avoiding impacts to the…
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Norfolk Southern Railroad
The original bridge carrying the Norfolk Southern Railroad over the Grand River was built in 1905 and reinforced in the 1940’s. High maintenance costs and a restrictively large footprint in the Grand River led to the decision to replace the bridge. The Great Lakes Construction Company was awarded the contract…
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Tappan Zee Bridge
Originally built in 1955, the Tappan Zee Bridge was maintaining a daily traffic rate of 40,000+ vehicles per day upon its completion, which greatly increased with years to come.  In 2010, the bridge had a daily traffic rate of 135,000 vehicles per day, reducing the life-span of the original design.…
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Corpus Christi Export Terminal
Corpus Christi Liquefaction, LLC, a subsidiary of Cheniere Energy, is developing and constructing a liquefied natural gas (LNG) export terminal at one of Cheniere's existing sites that was previously permitted for a regasification terminal. The liquefaction project is being designed for five trains with expected aggregate nominal production capacity of…
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Veterans Memorial Bridge
Volusia County, Florida was awarded federal funding for the Tom Staed Veterans Memorial Bridge through the Florida Department of Transportation’s (FDOT) Local Agency Program (LAP). Through the LAP, FDOT disperses funding while tracking compliance with federal statues, rules and regulations on behalf of the Federal Highway Administration (FHWA). The replacement…
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Washington Port of Tacoma
The Port of Tacoma in Washington state has numerous Piers for the loading and unloading of ships carrying containers. The original configuration of Pier 4 is at an angle with Pier 3. Reconfiguring Pier 4 to be aligned with Pier 3 will create a straight, continuous wharf of almost 3,000…
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Bonner Bridge
Since the Bonner Bridge was constructed in 1965, numerous hurricanes have struck the Atlantic coast wreaking havoc on the Outer Banks of North Carolina. As a result, GRL Engineers were called in to help aid in the replacement of this nearly three-mile long bridge across the Oregon Inlet from Bodie…
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Kentucky Lake Bridge
Eggner’s Ferry Bridge, also known as Kentucky Lake Bridge, was the first of two major structures in the Lake Bridges Projects. The bridge carries US-68 over Kentucky Lake, connecting the land between the lake’s National Recreational Area and includes a basket handle tied arch over the main navigational channel. Johnson…
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SR 36 Bridge over Tuscarawas River
Large diameter open end pipe piles with interior constrictor plates were chosen as the foundations for the SR 36 bridge over the Tuscarawas River in Gnadenhutten, OH. In addition, a nearly 2,400 kip static load test was specified to evaluate the design methods used for this pile type. GRL was…
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I-90 Innerbelt Bridge
The George V. Voinovich Bridge, also known as Cleveland’s Innerbelt Bridge, carries I-90 over the Cuyahoga River Valley near downtown Cleveland, Ohio. The construction was completed in two design-build phases and was the first design-build project for the Ohio Department of Transportation. The six year, $566 million, twin bridge project…
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