Infrasense had a great time this week at the Transportation Research Board (TRB) Annual Meeting, where we met with clients and colleagues, and attended several technical presentations and committee meetings. As is always the case with TRB, we left the meeting feeling inspired and excited for the future of the transportation industry!
Subsurface Utility Engineering (S.U.E.) requires working together to plan safe and efficient surveys, which often means overnight shifts to minimize interactions with traffic. In addition to traditional utility mapping tools, Infrasense can deploy vehicle-based ground penetrating radar as part of SUE projects to report other subsurface conditions including pavement layer thicknesses and moisture ingress/ voiding.
Infrasense was recently in Dallas, Texas completing GPR pavement thickness surveys on the City’s arterials and collectors. We are happy to be working as a subcontractor to IMS Infrastructure Management Services as part of a larger network-level survey of the City’s pavement conditions.
Infrasense was recently in the City of Toronto completing GPR pavement thickness surveys on over 2,800 kilometers of the City’s network. We are happy to be working as a subcontractor to International Cybernetics Company (ICC) as part of a larger multiyear network-level survey for the City.
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 is out in Western Massachusetts recently completing a comprehensive evaluation of a bridge, including GPR, impact-echo, hammer sounding, and rebound hammer testing on all pier caps, columns, and abutments. The nondestructive testing data will be used to provide detailed maps and quantities of the substructure element conditions. If you have an upcoming project where…
In August of 2022, Infrasense performed an SUE QL-B survey to map the location of underground utilities of known and unknown origin adjacent to the Church Street bridge crossing Fall River in Bernardston, Massachusetts. The survey included the use of GPR and EMI tools as the primary detection instruments and GPS for positional accuracy. The…
Infrasense recently completed a subsurface utility engineering (SUE) project on Dorchester Avenue in Boston, MA. The initial phase of the project included reviewing existing site drawings (QL-D) and a site survey to identify the location of relevant site features (e.g., water valves, fire hydrants, manholes, and telephone poles (QL-C). The second phase of the project…
Infrasense recently completed a subsurface utility engineering (SUE) project in the vicinity of the four vent buildings that service the Sumner and Callahan Tunnels in Boston, MA. The project involved reviewing availability site drawings (QL-D), confirming the location of the site features (e.g., water valves, catch basins, manholes) (QL-C), and locating known and unknown utilities…
Infrasense completed a subsurface utility mapping project at a large industrial park in Tyngsboro, MA using a combination of ground penetrating radar (GPR) and electromagnetic induction (EMI) locating methods. The GPR equipment included a 400MHz ground-coupled antenna mounted to a cart with an integrated distance encoder and GPS unit. This GPR antenna is capable of…
In June of 2022, Infrasense performed an SUE QL-B survey to map the location of underground utilities of known and unknown origin along 2 miles of Route 16 in Mendon, Massachusetts. The survey included the use of GPR and EMI tools as the primary detection instruments and GPS for positional accuracy. The infield-located utilities, combined…
Infrasense recently completed nondestructive testing of a concrete tunnel liner using various NDT methods. The objective of this testing was to assess the condition of the concrete and confirm the presence of grout behind the liner. If you have any upcoming projects where we might be able to help, we’d be happy to hear from…
Infrasense was recently in Connecticut completing nondestructive testing to map elements of an unknown bridge foundation, including the footing and underlying piles. If you have upcoming projects where having bridge as-built information would be useful, we would be happy to help!
Infrasense is off to a busy start in 2023! We kicked things off with our annual company retreat the first week of January where we had sessions on internal R&D, equipment, software, new capabilities, project execution/ management, and other topics. The following week a group of us headed to Washington D.C. for the Transportation Research…
Infrasense just completed data collection for a concrete structure evaluation project on a building in Revere, MA. Ground penetrating radar was used to scan over 50,000 sq. ft. of concrete slab, spanning several floors. Data collected will be used to identify the spacing and depth of reinforcing steel bars and identify other targets such as…
Infrasense had the opportunity to visit Arizona last week while completing GPR pavement thickness surveys on over 1,200 lane miles of major highways throughout the state. We are happy to be working as a subcontractor to the International Cybernetics Company (ICC) as part of their ongoing Statewide Geospatial Roadway Data Collection and Inventory Project.
Infrasense has been busy the last couple of weeks completing non-destructive scanning of parking structures in MA and NJ. The results of these surveys include maps of concrete deterioration, rebar depth, and rebar spacing/layout. If you have an upcoming project where these capabilities would be of value, please email us at opps@infrasense.com
Infrasense recently completed ground penetrating radar (GPR), infrared thermography (IR), and high-resolution video (HRV) data collection on a pair of decks in southeastern Virginia. These datasets will be used to quantify and map rebar-level delaminations, corrosion activity, spalling, and patching. Additional testing, including targeted coring, chloride sampling, and half-cell potential (HCP), will be carried out…
Infrasense was recently in Plattsburgh, NY to complete a GPR survey to identify embedded trolley tracks and any other obstructions within the pavement in preparation for an upcoming construction project. Mobilization to the project site included taking a ferry across Lake Champlain, from Grand Isle, VT to Plattsburgh, NY! If you have an upcoming project…
Infrasense has been busy with falling weight deflectometer (FWD) testing in MA, NH, and NJ over the past couple of months, completing testing along 15 state highway project sections. The FWD data is combined with ground penetrating radar (GPR) data and the resulting outputs include pavement layer moduli, pavement layer thicknesses, subgrade resilient modulus, effective…
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 has recently added three new engineers to the staff in anticipation of a busy 2022! Parker Aubin (right) brings his 4 years of geotechnical engineering experience and passion for geophysics on board. Aidan Rolli (left) stuck around after his 2021 summer internship and is now full time, already contributing to a wide range of…
Infrasense was recently in Minnesota to carry out a pavement thickness survey using ground penetrating radar. The results will be used to assist with future pavement design projects. While there, one of our engineers captured this photo of our survey vehicle under the Milky Way!
Infrasense is back in Wisconsin collecting Infrared and GPR data on a large number of bridge decks throughout the state. We are looking forward to completing projects scheduled throughout the Midwest over the next few months!
Infrasense was in Lewis County, New York this past week completing GPR pavement thickness surveys for select county roads. The surveys will result in continuous pavement layer thickness information which will be validated by cores. To learn more about our pavement structure evaluation capabilities, please visit https://infrasense.com/pavement-structure-evaluation/ or feel free to email info@infrasense.com with questions…
Infrasense was in western Massachusetts this past week completing a suite of tests along the abutments of a bridge to quantify and map deterioration, as well as identify concrete compressive strength, rebar spacing, and rebar depth.
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.
Infrasense completed a subsurface survey to map the location and position of an oil/water separator and drainage basin structure that had its access lids paved over during construction at the site. The rapid NDE survey consisted of using a portable, GPR Survey System manufactured by GSSI, Inc. to identify and map out the locations so…
Hard to believe this photo is nearly 30 years old – at the time, Infrasense Founder, Dr. Ken Maser was working with a company in Denmark to carry out GPR surveys for pavement thickness! For most of his career, Ken has been at the forefront of GPR for highway infrastructure applications.
In early autumn of 2020, Infrasense headed to the Hoosier state to perform multi-phase condition surveys on 71 bridges decks as part of an Indiana DOT study carried out by Purdue University. A suite of nondestructive testing technologies were deployed across four groups of bridge decks that were selected using different sets of objectives. The…
Infrasense recently evaluated the condition of 41 bridge decks located in northcentral Wisconsin. The deck evaluations utilized vehicle-based infrared thermography, high-resolution video, and ground penetrating radar. All testing was carried out at a rolling speed, which allowed for spot verification via hammer sounding. Following the field surveys, the data was transferred to Infrasense’s headquarters in…
#TBT In 1996, Infrasense worked with UMass Amherst testing railroad tracks to detect fouling in the ballast and deterioration in the wood ties using ground penetrating radar (GPR). Initial testing was done on a test track at the UMass Amherst lab and then equipment was mounted to a HiRail vehicle for field testing on a stretch…
Last month Infrasense performed a high speed pavement survey on a stretch of Interstate highway outside the transportation hub of Atlanta, Georgia. The purpose of the project was to determine the structure for approximately 17 miles of pavement. Did you know that Georgia contains 15 different Interstate highways? That’s good for tenth most in the…
In Spring 2018, Infrasense founder Ken Maser traveled to northern Israel to train a local team on how to collect Ground Penetrating Radar (GPR) data for a network-level pavement survey. For the next seven months, the team collected 7000 km of pavement in 2240 management units. The data was continuously uploaded to Infrasense for quality…
Infrasense conducted a nondestructive survey and report on the main travel lanes of a 1-mile section of Rubber Avenue in Naugatuck, CT. The project provided the client with tabular and graphical data sets plotted at a 5-ft interval along the centerline of each travel lane, with each point linked to precise GPS coordinates. These datasets…
Infrasense would like to congratulate our founder and senior principal Ken Maser on receiving the ASCE’s 2019 Wilbur S. Smith Award in recognition of his outstanding accomplishments in Civil Engineering. Ken is a leader in the field of Nondestructive Evaluation and its application to highway infrastructure. He will be presented with the award at the…
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…
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…
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 completed a vehicle-based inspection of a bridge deck in Virginia Beach, Virginia. The methods of testing included Ground Penetrating Radar (GPR), Infrared Thermography (IR) and High-Resolution Imaging (HRI). Testing was performed in August and September, with the goal of mapping rebar depth and quantifying areas of concrete deterioration, rebar-level delamination, spalling, and patching. The…
Infrasense and BDI mobilized to Norfolk, Virginia to complete testing on the 1800-foot long bridge deck. The methods of testing included GPR, HCP, coring, and chloride sampling. Testing was performed in September on 14 select panels of the bridge deck, with the goal of identifying rebar depth and spacing, and areas of probable corrosion. The…
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…
Infrasense completed a non-destructive survey of two intersecting multilane roadways in Virginia Beach, VA. The survey provided the client with subsurface pavement structure data along all driving lanes, shoulder lines, and turn lanes within the project section. Pavement layer thicknesses were plotted to produce a complete profile of the pavement structure. The profiles and layer…
Infrasense completed a ground penetrating radar (GPR) survey to map the reinforcing steel layout and depth along the underside of a bridge deck in Fond du Lac, Wisconsin. The rebar map will be used by the client to assess the load carrying capacity of the structure and ultimately to update the load rating. The GPR…
This June, Infrasense conducted a non-destructive survey and report for a 2.3-mile section of a multilane roadway, in Virginia Beach, VA. The project provided the client with data from all 4 driving lanes, both outer shoulder lines, and all turn lanes within the section. Pavement layer thicknesses were plotted along with recommended coring locations where…
Infrasense mobilized from Boston to Virginia to survey Norfolk’s 64,000 square foot Granby Street Bridge. The GPR survey was done in March, and the IR survey was done in April, when the weather conditions were sufficient for revealing subsurface delaminations. The GPR survey was performed at normal driving speed, and IR was done at a…
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…
Infrasense recently completed a project using a ground coupled vehicle mounted 3D Ground Penetrating Radar (GPR) system (manufactured by 3D-Radar) to identify subsurface objects that would impede future installation of sheet pile walls at the Brooklyn Terminal. Using the trailer-mounted 3D-Radar step frequency array system reduced the data collection time significantly and provided an excellent…
Working with US Aerial Video, Infrasense has investigated the use of drones to collect infrared data of bridge decks. Data was collected on two bridge decks in the Pittsburgh area using a drone equipped with both visual and infrared cameras. This data was analyzed to determine whether there was sufficient detail to map surface and…
Impact Echo is another NDE testing technique that Infrasense uses to assess Wisconsin bridge deck condition. In 2014, Infrasense used this testing method in a unique way on the Leo Frigo Bridge, an 8,000-foot long bridge over the Fox River in Green Bay, Wisconsin that typically carries around 40,000 motorists on Interstate 43 each day.…
As part of the roadway structure database Infrasense developed to assist the Idaho Transportation Department (ITD), we also collected and analyzed data to assess the condition of each bridge deck located on the pavement network. Infrasense used high-speed Ground Penetrating Radar (GPR), Infrared Thermography (IR), and High-Resolution Video (HRV) testing to create plan view maps…
Infrasense, through multiple work orders, has conducted infrared thermography (IR, per ASTM D4788-03) and ground penetrating radar (GPR, per ASTM D6087-08) surveys on over 800 decks representing 7.7 million sq. ft. in Wisconsin’s SW, NC, NW, NE, and SE regions. In 2017, Infrasense conducted surveys on over just over 130 decks. All GPR data collection…
Infrasense has developed a collaboration with GPR Imaging Solutions PTY LTD of Melbourne, Australia. GPR Imaging Solutions was formed in 2013 to introduce high speed subsurface scanning into the Australian market. As part of this collaboration, Infrasense has advised GPR Imaging Solutions in implementing the equipment for roadway scanning, and has provided data analysis support…
Infrasense supported the research team at Northeastern University in developing a survey vehicle system to automatically detect and process surface and subsurface roadway defects. The project, entitled VOTERS (Versatile Onboard Traffic Embedded Roaming Sensors), is part of NIST’s Technology Innovation Program, and focuses on the subsurface sensing of pavements and bridge decks. Some of the…
Infrasense contributed to the original research efforts for the SHRP2 project titled, “Advanced Methods to Identify Pavement Delamination (R06D)”. The objective of this project was to identify and validate nondestructive testing technologies that can detect delamination in hot-mix asphalt (HMA), to operate at a reasonable travel speed, and cover a full lane width. Most recently,…
Infrared thermography is one of our primary testing technologies for Wisconsin bridge deck condition evaluations, and we are always seeking ways to improve our testing methods. In 2017, this research really took flight – literally! Infrasense has also been working with a national aerial imaging company to collect and analyze infrared and visual imagery from…
Infrasense has provided nondestructive evaluation services to multiple parking structures in New York, including the Crowne Plaza Syracuse parking garage, the NY East End parking garage, and the NY Civic Center parking garage. At the Crowne Plaza garage, Infrasense carried out GPR testing to map the location and depth of steel reinforcing bars within a…
The Virginia Department of Transportation commissioned Infrasense to perform condition evaluations of the walls and roadway deck of the Hampton Roads Tunnels, which carry I-64 below the Chesapeake Bay in Norfolk, Virginia. The eastbound and westbound tunnels are 7,315 feet and 7,470 feet in length, respectively. The tunnel wall evaluations were carried out using a…
Infrasense completed a ground penetrating radar (GPR) survey to map the size and position of the steel reinforcing mesh within an undocumented pier extension at the Midway Airport in Chicago, Illinois
Infrasense completed a survey to both locate embedded utilities and determine pavement thickness of a three mile section of road spanning Warren and Bristol, Rhode Island. The survey was carried out using a nondestructive technology, Ground Penetrating Radar (GPR), and thus required no cores or test pits to obtain the necessary information. A majority of…
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…
We provided pavement layer thickness information to facilitate FWD back-calculation efforts, and ultimately the determination of Pavement Classification Numbers (PCNs) for all airport pavement facilities.
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.…
Infrasense has conducted Ground Penetrating Radar (GPR) surveys on 103 bridge decks (over 800,000 square feet of bridge deck) in Ohio’s District 1 using a dual 1-GHz horn antenna GPR system. The work has been carried out under 2 contracts, the first completed in 2008 and a second currently ongoing. All surveys have been carried…
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…
Infrasense performed high speed scanning on major highway bridges throughout Connecticut, including the Arrigoni Bridge in Middletown, the Sisson Avenue interchange on I-84 in West Hartford, and the complex “Waterbury Stacks” on I-84 in Waterbury. Combined, these projects represent over 1-million square feet of bridge deck. Infrasense collected ground penetrating radar (GPR) data on these…
In 2015, Infrasense carried out a pavement evaluation program for a ~2.8 mile section of Route 2 in East Hartford, Connecticut using a combination of ground penetrating radar (GPR), falling weight deflectometer (FWD), and selective coring. The objectives of this program were as follows: Confirm limits of full-depth asphalt and the composite sections of pavement…
Infrasense teamed with RS&H to complete a multi-phase project in the Jacksonville area to evaluate the condition of 14 bridge decks. The first phase of the deck condition evaluations was carried out using infrared thermography (IR), ground penetrating radar (GPR), and high resolution video imaging. A second phase, consisting of impact echo (IE) and hammer…
Infrasense recently completed deterioration mapping for two mainline bridge decks and six adjacent ramp decks, representing over 100,000 square feet. The Silliman Evans Bridges carry Interstate 24 over the Cumberland River, just north of the I-24/I-40 interchange. The deterioration mapping was performed using vehicle-mounted high-speed ground penetrating radar (GPR) to scan each bridge deck without…
Infrasense has surveyed 181 decks throughout Minnesota’s Metro district and Districts 1 and 6 using Infrared Thermography (IR) and Ground Penetrating Radar (GPR), accompanied by underside visual inspections. GPR data was carried out at highway speeds with no disruption to traffic, and IR data was collected using a rolling lane closure. All traffic control was…
The State of Nevada commissioned a deck rehabilitation project of the “Downtown Las Vegas Viaduct”, which spans over 1.5 miles of I-515, beginning just east of the I-15 interchange in Las Vegas, Nevada. In order to facilitate planning and subsequent design efforts, a comprehensive nondestructive evaluation of the deck condition was carried out by Stantec…
Infrasense carried out high-speed GPR condition evaluations on 236 decks throughout the state of Montana. Of the 236 decks surveyed, 165 were selected for a Level 2 analysis, which involved detailed mapping of the concrete deterioration. Additionally, rebar depth contour plots were created which facilitate more accurate deck repair volume calculations. Per the request of…
Infrasense recently completed bridge deck condition evaluations of 25 bridge decks on or over Interstates 15, 80, and 84 using high-speed ground penetrating radar (GPR), infrared thermography (IR), and high-resolution video (HRV). Of the 25 decks evaluated in this project, 11 were surveyed using GPR, IR, and HRV; the remaining 14 decks were surveyed using…
Infrasense completed a subsurface pavement structure investigation of both directions of a 1-mile long viaduct on Interstate 93, just north of Boston. This viaduct, adjacent to the Leonard P. Zakim Bridge, leads directly into Boston, so minimal traffic disruption of this corridor is a priority. Infrasense used a high-speed ground penetrating radar (GPR) survey to detect…
Infrasense completed a ground penetrating radar (GPR) survey to map the depth of steel reinforcing bars within the new Loon Mountain Resort bridge in Lincoln, NH.
Infrasense recently completed a project using a ground-coupled vehicle-mounted 3D ground penetrating radar (GPR) system manufactured by 3D-Radar to identify subsurface structural objects that would impede future installation of sheet pile walls at the Brooklyn Army Terminal.
Infrasense completed a Pilot Study to establish a method for measuring the void space between a decorative fascia wall and a mechanically stabilized earthen (MSE) retaining wall using GPR. Ground-coupled GPR antennas were used to test the abutments of multiple bridges in Green Bay, where these MSE retaining walls are used in the design of…
Infrasense evaluated the condition of the upper parking deck of the Spring Street Garage in Portland, Maine. The evaluation utilized ground penetrating radar to quantify and map deterioration in the concrete slab, which was inaccessible for sounding due to an asphalt overlay. The GPR deterioration map was found to correlate reasonably well with areas of…
Infrasense and Radar Solutions International (RSI) have recently completed utility mapping at two liquid natural gas facilities in northeastern Massachusetts.
Infrasense developed a roadway structure database to assist the Idaho Transportation Department (ITD) in its future project planning and design efforts and to ultimately advance the condition of the roadway to an acceptable level. The roadway structure database covers approximately 1000 miles of state highways within ITD’s District 6 and was generated primarily with data…
Infrasense and BDI recently teamed to perform a unique study of three bridges in Davie County, North Carolina for the North Carolina Department of Transportation (NCDOT). The objective of the study was to pilot a comprehensive NDE testing program on a small sample of bridge decks, which will be used as a basis for future…
In May 2017, Infrasense carried out a GPR pavement thickness survey of 24 lane-miles of I-85 near Spartanburg, SC. The right shoulder, right lane, center lane, and left lane were surveyed in both northbound and southbound directions. The results of the survey included a statistical summary of the pavement layer thicknesses in each lane, as…
This past summer, Infrasense conducted a multi-faceted non-destructive survey and report for 17 bridge decks in Wisconsin DOT’s North Central Region. The project provided the client with a comprehensive set of condition results to facilitate a data-driven approach to programming their bridge inventory. Surveys were performed at normal driving speed with no disruption to traffic.…
In 2017, Infrasense welcomed Aleksey and Patrick aboard as our two newest full-time employees! Aleksey and Patrick will be filling Geoscience Engineer and Staff Engineer roles, respectively. Aleksey received his Ph.D degree in Geological Engineering from the Missouri University of Science and Technology (MS&T). During his postgraduate studies, he was actively involved in multiple projects…
In order to facilitate rehabilitation planning of an asphalt overlaid bridge deck carrying I-87 over Pascack Road, ground penetrating radar (GPR) was used to quantify and map concrete deterioration. The GPR data was carried out at driving speeds using a vehicle-based system, so no lane closures were required. In addition to being deployed at driving…
Infrasense completed high-speed scanning of 19 bridge decks in 11 different counties throughout Virginia, totaling over 250,000 square feet. The scanning included Ground Penetrating Radar (GPR) evaluations. The deliverables included deterioration and rebar cover quantities and maps of the bridge decks. Per the request of the Virginia Department of Transportation (VDOT), individual deck condition reports…
Infrasense recently performed a ground penetrating radar (GPR) survey of the bridge deck carrying Lafayette Road over the Soo Line and B.N. Railroad in St. Paul, Minnesota. The GPR data collection system included dual 2GHz horn antennas and a SIR-30 control unit manufactured by GSSI of Nashua, NH. This GPR survey was carried out at…
Infrasense completed the subsurface pavement structure evaluation of approximately 79.93 lane-miles of public roadways in Falls Church, Virginia using Ground Penetrating Radar (GPR) testing to determine the thicknesses of the pavement structure layers. It was performed along the centerline of each roadway, centerline of each lane, and at an offset approximately 1 foot from the…
Infrasense’s Dr. Ken Maser presented the results of a network-level pavement substructure evaluation completed in Idaho. The project focused on a network of 700 miles of roadways covering a wide range of geographic and pavement structure conditions. The roadways were continuously surveyed with a Traffic Speed Deflectometer (TSD) and with Ground Penetrating Radar (GPR). The…
In mid-May, Infrasense began phase 1 of deck testing on 52 bridge decks throughout 12 counties in Oregon. We have started with the ground penetrating radar testing, and plan to return in July to perform infrared testing under more optimal weather conditions. Phase 2 will begin in late summer or early fall, after preliminary GPR…
Infrasense recently deployed an air-launched 3D-Radar system on projects in Iowa, Florida, and Virginia. The high-resolution system contains 21 antennas spaced 3 inches apart, and is capable of penetrating up to 5 feet below the surface. Infrasense has used this system to evaluate bridge deck, pavement, and tunnel deck conditions.
This past week, the Infrasense team spent a few days in the White Mountains to share some technical knowledge, explore the snowy outdoors, and prepare for what looks to be another busy year providing clients with accurate and useful NDE testing services. Activities ranged from an overview of our performance in 2016, a refresher…
How our high resolution video complements the abilities of Infrared. Infrared data is collected using a FLIR thermographic camera, which measures surface temperature and can provide information regarding subsurface damage in bridge decks. The camera is mounted to a vehicle and data can be collected at highway speeds with clear and accurate results. After surveying…
On Thursday, December 1, 2016, Ken Maser, Ph.D., PE, will give a presentation on the state of the practice and the future of GPR and other forms of NDT for both pavement and bridge deck applications. The presentation will be in webinar format, via the Transportation Learning Network. The 1.5-hour webinar will cover the various applications…
Here in New England, red and orange leaves have begun to brighten our daily commutes, which have become noticeably darker we inch closer to winter. Fall is here, and so is Back-to-School season, which means our group of summer interns have left some empty desks around our office. Everyone at Infrasense would like to thank…
Infrasense just finished some fieldwork in beautiful Idaho, where plains, mountains, dark skies provided a refreshing change of scenery from our Boston office. Here’s a shot of our survey vehicle on a truss bridge (not a structure we were evaluating, just a great photo op!) with the MIlky Way stretching across the sky above us.…
After just completing data collection for a group of bridges in Ohio, which included performing underside inspections, I thought it would be a good opportunity to dedicate a little time to one of the more unheralded ways we assess a bridge deck’s condition. Because most of our services are predicated on efficiency and speed, we…
Infrasense recently performed subsurface pavement structure investigations on 21 sections of pavement throughout Fort Hood. This project provided pavement structure information to support Falling Weight Deflectometer Testing (FWD) and subsequent rehabilitation planning and design.
Infrasense recently performed subsurface pavement structure investigations on 21 sections of pavement throughout Fort Hood. This project provided pavement structure information to support Falling Weight Deflectometer Testing (FWD) and subsequent rehabilitation planning and design.