Ground Penetrating Radar (GPR) systems - GSSI


Bridge Inspection Using GPR

Ground Penetrating Radar for Bridge Deck Inspection

  • Overview
  • Condition Assessment
  • Concrete Cover
  • Bridge Deck Thickness
  • Concrete Inspection

GSSI Evaluation Tools for Bridge Decks

Bridge and Highway professionals and structural engineers require effective methods for determining the condition of aging bridge decks, parking structures, balconies and other reinforced concrete structures. Acoustical and visual techniques are subject to operator interpretation. Bridge professionals worldwide use GPR because it is the only nondestructive means of obtaining quantifiable data on bridge decks.

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Bridge Deck Condition Assessments with GSSI GPR

Engineers and transportation professionals need a reliable method to collect quantitative data on bridge decks. GSSI’s BridgeScan is designed for bridge condition assessment, providing for accurate representation of the bridge data by automatically accommodating for bridge skew angle.

Rebar locations of processed bridge data displayed in RADAN InterActive Interpretation mode (top).
Color-coded deterioration contour map created with DPlot® software (bottom).

Bridge deck condition assessment with GPR

Concrete Cover Assessments Made Easy with GSSI GPR

Engineers use concrete cover information to determine if reinforcement bars are protected from environmental effects. Transportation infrastructure professionals use BridgeScan to identify areas in which the cover is non-compliant.

2D line scan of a bridge deck in Lewiston, Maine USA.

Bridge deck concrete cover GPR survey

Measure Bridge Deck Thickness with GPR

Ground penetrating radar provides a nondestructive technique for transportation professionals in evaluating bridge deck thickness. GPR can obtain reliable thickness measurements in minutes and eliminate the need to core.

2D line scan of bridge deck, red line signifies the bottom of the bridge deck.

GPR survey to determine bridge deck thickness

Using GPR for Concrete Inspections of Bridge Structures

Use ground penetrating radar to locate embedment within concrete structures prior to cutting or coring. Collect quantifiable data on rebar location and areas of delamination.

2D data of rebar mat 6 inches on center. Data collected with BridgeScan.

GPR survey-bridge concrete inspection

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