#United States #Rhode Island #Infrasense #Newport #Claiborne Pell Bridge

In-depth Assessment of Claiborne Pell Bridge Deck

Infrasense, Inc. recently undertook a comprehensive evaluation of two sections of the Claiborne Pell Bridge deck, an iconic structure spanning approximately two miles near Newport, Rhode Island. The primary aim was to assess the bridge's overall condition and identify any necessary repairs or rehabilitation.

To achieve this, Infrasense employed a combination of advanced technologies: Ground Penetrating Radar (GPR), High-Resolution Visual (HRV), and Rapid Automated Sounding (RAS) methods. These techniques allowed for a detailed analysis of the bridge deck's structural integrity, focusing on crucial factors such as rebar depth and concrete deterioration. This multi-faceted approach provided a thorough understanding of potential delamination issues, which could compromise the bridge's safety and longevity.

The Evaluation Process

The evaluation process began with the collection of GPR data using a sophisticated vehicle-based system equipped with a dual horn antenna. This setup enabled data collection while traveling at regular driving speeds, ensuring thorough coverage across the deck's width. The GPR scans were carefully timed and spaced three feet apart to maximize data accuracy. The integration of HRV methods provided visual cross-sectional representations of the bridge deck, allowing engineers to assess its condition visually alongside the quantitative GPR data.

In tandem with GPR, the RAS surveys utilized a trailer-based system that detected delaminations through a series of sound strikes against the bridge deck. Using directional microphones, the RAS collected sound data with a high degree of sensitivity. The system also featured an integrated GPS for accurate location referencing, ensuring that the assessment was both precise and comprehensive. In total, three passes were conducted in each direction, achieving nearly complete coverage of the roadway area within the project sections in just one hour.

Additional Insights and Research

In addition to the advanced scanning procedures, external inspections of the deck's underside were performed, and core and chloride ion concentration sampling were conducted. These external assessments, combined with the internal data collected through GPR and RAS, enabled engineers to generate informed estimates regarding areas needing partial and full-depth repairs.

It's notable that Infrasense has specialized in subsurface scanning technologies since 1987, continuously pushing the envelope in nondestructive evaluation methods. Their engineers excel at extracting critical information from a variety of structures without compromising their integrity. This commitment to innovative solutions not only enhances their services across the United States but also contributes significantly to the research and development within the realm of subsurface detection.

A Commitment to Safety and Longevity

The efforts made during the evaluation of the Claiborne Pell Bridge exemplify Infrasense's dedication to ensuring the safety and longevity of vital infrastructure. By utilizing cutting-edge technology and methodologies, the company aims to support maintenance efforts that will safeguard the bridge and ensure it can serve future generations of travelers. To learn more about Infrasense and their range of services, visit their website at www.infrasense.com. This evaluation is not merely an assessment; it is a proactive step towards maintaining the structural integrity of one of Rhode Island’s most significant transportation assets.