Infrasense completed a subsurface pavement structure investigation of 18 sections of pavement in Western Maryland using high-speed ground penetrating radar (GPR). The sections were surveyed in both driving directions to obtain continuous structure information for both bound and unbound material layers. The GPR results will be used to supplement Falling Weight Deflectometer (FWD) back-calculations to achieve…
Infrasense recently surveyed multiple runways, a taxiway, and a 240,000 square-foot apron at the San Francisco International Airport. The survey implemented a combination of 400 MHz and 1 GHz antennas mounted off the back of the survey vehicle. The use of both frequencies provided an excellent combination of data resolution and depth of penetration to…
In early April, Infrasense conducted a non-destructive survey and report for 10 lane miles of a section of Route 2, in Rhode Island. The project provided the client with 4 sets of data showing where concrete appears to be present under the asphalt pavement versus an aggregate base. The survey was conducted at driving speed…
This past summer, Infrasense conducted a multi-faceted non-destructive survey and report for 84 lane miles of a section of I-86, made up of abutted concrete panels. The project provided the client with a comprehensive set of condition results to identify and map out distressed panels along the roadway. Surveys were performed at normal driving speed…
Infrasense has performed pavement structure evaluations for the Minnesota Department of Transportation (MnDOT). Since 2015, ground penetrating radar (GPR) surveys totaling over 480 lane-miles were performed on roads in both the Metro and Northeast regions. For each project, preliminary GPR results were used to select cores to be used for calibration and confirmation of the…
A construction project near Wichita, Kansas involving the transportation of construction equipment and personnel between the state highway and a work site 3 miles down a two lane country road required a “baseline conditions” record to be produced. Infrasense was tasked with collecting high resolution video to both record and quantify the current road conditions,…
Infrasense, Inc. recently completed a subsurface pavement structure investigation of the Cleveland Memorial Shoreway using high-speed ground penetrating radar (GPR). The initial phase of the GPR evaluation included an analysis of the data to define the limits of the different structural “sections” of pavement throughout the length of both the outer eastbound and westbound shoulders.…
In 2012, Infrasense, Inc. completed a subsurface pavement thickness survey of 290 lane miles of the Parks Highway between Anchorage and Fairbanks, Alaska using ground penetrating radar (GPR). The thickness investigation employed the use of two different frequency antennas, designed to achieve the optimum tradeoff between resolution and depth of penetration. The objective of the…
Infrasense has performed a variety of different pavement projects across the state of Virginia, including statewide and citywide network-level evaluations and localized project-level evaluations for rehabilitation design
Infrasense worked with the Upper Great Plains Transportation Institute and Dynatest Consulting to complete a NDT subsurface pavement structure investigation as part of a legislature-commissioned study to determine the investment needs for all county and township roads and bridges in North Dakota. The pavement investigation project included GPR pavement thickness and structure data collection and…