CableScan® Cable Stayed Bridge Inspection Service

Visual for NBI Inspections and Magnetic Flux Leakage (MFL) To Peer Through the High-Density Polyethylene (HDPE) Cable and Locate Inside the Steel HDPE Sheathing.

CableScan® is a patented robotic cable-stay inspection service that consists of two inspection services. The first utilizes high-definition video technology. CableScan® visual does not require lane closures, man-lifts, bucket trucks, or night-time inspections. It is a self-propelled robotic system controlled by a base station that receives HD video and MFL transmissions from the robotic crawler.

By utilizing Infraspect’s robotic CableScan® any imperfections along the cable stay are recorded as well as the length traveled along with the stay, and the corresponding length traveled along the deck. We can provide the length and size of cracks and other abnormalities on the cable stay. The internal technology in CableScan® utilizes MFL to locate section loss and corrosion through the HDPE sheathing on the exterior strands of steel inside of the steel cables.

CableScan® MFL Robotic Bridge Inspection for Cable-Stayed Bridges

CableScan® MFL robots does away with manual subjective inspections.
No Lane closures or bucket trucks required, means fewer accidents for traveling public.
Portable, wireless unit peers through 360 degrees of the cable to locate problem areas that need further investigation inside the outer layer of critical steel. The cables inside the HDPE protective cover is the part of the cable that helps hold up the bridge.
Most of today’s inspections only inspect the wrapping surrounding the steel. CableScan® can be used as a screening tool to monitor deterioration and know when further investigation is needed.
Cable stay bridge grout port

Details of Grout Ports

Bridge inspection with robotic nbi inspection

Multiple Views, Angles & Detail Recorded

CableScan® inspections take into account all of the required parameters of Federal Highways (FHWA) for bridge cable inspections. The location of any abnormalities along the cable stay are recorded so follow up maintenance and reviews can be performed. In addition the the location on the cable as well as the location on the ground are recorded so that maintenance crews can park their truck directly under the affected area. This makes is easier to instantly access the correct location for repair work.

By maintaining a historical record of the inspection, any inconsistencies however slight can be reviewed over multiple inspection cycles to quickly determine if there has been any increase in deterioration so that further repair action can be taken if needed.


No lane closures
Saves money (inspection)
Saves money (repairing in a timely fashion will extend the service life)
Safer for the inspectors
Less subjective than current methods
Safer for the public (no boom trucks parked on the bridge at night)
Deterioration progression can be properly monitored

Updating 50-Year-Old Manual and Subjective Inspections With Modern Technology and Robotics

CableScan® MFL robotic inspection unit can locate and quantify inside an HDPE cable on the outside steel layer and be used as a screening tool to know when further action may be needed. This advancement for NBI and interim inspections provides more quantitative data than ever viewed before.

CableScan® Visual Inspection Service Presentation Visual

Watch how CableScan® provides a condition assessment report that helps provide an action plan for repairs.

Steel Bridge Cable Visual Inspection and HDPE Cable MFL Inspection

Golden gate bridge inspection

Through the use of Infraspect’s new patented and proprietary testing equipment and procedures, our inspectors can perform cable condition assessments of bridge cables identifying loss of section and broken wires through the HDPE sheathing in the top layer of steel strands inside the cables. Our inspectors do not need cranes or bucket trucks.

In addition, they do not require lane closures. CableScan® is a self-propelled robotic inspection system that attaches to the cable and travels along the full length of the cable transmitting data to the inspector’s laptop.

CableScan® can identify corrosion, loss of section, and broken wires on-site on the outside steel layer as well as cracks, holes, and other anomalies on a cable. Infraspect delivers a comprehensive report identifying individual strand conditions as well as overall condition assessments of the cable system for the bridge.

In addition, Infraspect can take a high-definition video of the entire Cable Stay and locate the length of a crack or anomaly on the exterior of the cable as well as its position on the structure. With each inspection cycle, a comparative analysis of any anomalies over time can help with early repairs and more efficient asset management potentially saving lives. Safer for the inspector and safer for the traveling public.

Tacoma cable stay bridge inspection

CableScan® Inspection Service Presentation

Non Destructive Testing (NDT) and robotic engineering
Fixing our infrastructure with technology, not tax dollars
Safer for inspectors
Safer for the traveling public!