Infrasense has performed vehicle-based infrared thermography scanning of thousands of bridge decks throughout the country. Vehicle-based IR is faster, safer, and more cost-effective than traditional bridge deck inspection methods. It allows for high-precision data collection with no lane closures, no personnel exposed to traffic, and the capability of scanning dozens of decks per day. We…
Rapid Automated Sounding for Bridge Deck Condition One of the newest nondestructive testing technologies in use at Infrasense is our Rapid Automated Sounding (RAS) system. This system elevates the traditional method of detecting bridge deck delaminations by combining automated chain strikes, microphone arrays, and algorithmic audio analysis – delivering impressive accuracy and efficiency. RAS collects…
Infrasense was in Missouri recently completing GPR, infrared, and visual scanning of bridge decks in the St. Louis area. Below are sample images in the early stages of processing. The final deliverables will present the infrared and visual imagery for the entire bridge deck with all areas of delamination, patching, and spalling mapped and quantified.
Infrasense was recently out in Big Sky Country scanning 31 bridge decks primarily located between Missoula and Glendive, Montana. The deck condition evaluations utilized a combination of ground penetrating radar, infrared thermography, rapid automated sounding, and high-resolution visual methods. Targeted locations will also be tested for chloride ion concentration on select decks.
Infrasense engineers recently carried out a GPR scan on an interstate in Connecticut to evaluate pavement and bridge deck conditions. The results will be used to plan subsequent testing including FWD and coring, and ultimately to support the rehabilitation design.
This past summer, Infrasense surveyed 10 miles of interstate pavement and 23 bridge decks with ground penetrating radar. The objectives of the GPR survey included: Locating the lateral and longitudinal extents of the underlying PCC pavement and full-depth asphalt pavements Providing thicknesses of asphalt and PCC pavement layers Locating and quantifying deterioration in the underlying…
This past summer, Infrasense surveyed a bridge deck in La Crosse, Wisconsin using infrared for deck delamination detection according to ASTM D 4788 – 03. The equipment setup involved a dedicated vehicle mounted with a high resolution, distance triggered FLIR infrared camera synced up with a high-resolution visual spectrum camera. Both devices capture a whole…
In July of 2018, Infrasense mobilized a two-man team to perform a ground-coupled GPR survey of the road surface on a stone arch bridge in Orange, CT. With the help of a traffic control unit and a local police officer, the condition survey was carried out during overnight hours with minimal disruption to traffic. The…
This past summer, Infrasense conducted non-destructive surveys and reported for 5 bridge decks in Missouri. The project provided the client with a comprehensive set of condition results to facilitate a data-driven approach to programming rehab and maintenance efforts. As a supplement to the GPR surveys, chain drag, coring, and infrared thermography were used on select bridge…
Infrasense recently completed an internal research effort to assess the feasibility and accuracy of aerial imaging for mapping bridge deck conditions. The results of this study provided support for implementation on upcoming projects. The primary advantage of the aerial method is its efficiency. Data can be collected for hundreds of bridge decks in a single…