Bridge Deck and Structure Condition Assessment

Overview

We specialise in bridge deck and bridge structure condition assessment to understand deterioration and asphalt overlay thickness for profiling / milling and bridge load design. We also undertake structural scanning to detect and provide 3D maps of reinforcing steel in reinforced concrete for piers, pile caps, concrete beams, floor slabs, walls, etc.

Using ground penetrating radar and infrared cameras (infrared thermography), we are able to:

  • Measure asphalt thickness (overall and layer depths) on the bridge deck prior to asphalt profiling / milling
  • Mark location of reinforcing steel and provide 3D models
  • Identify expansion joints
  • Locate moisture ingress
  • Detect voids / cavities
  • Determine deterioration, degradation and spalling of concrete
  • Measure concrete cover to reinforcing steel

       

Understanding asphalt depth is a critical planning element prior to milling the surface with profiling machines. Its important to understand where expansion joints are and understand how the asphalt thickness changes across the structure. Sometimes we see significant asphalt thickness variations on different sections of a bridge.

Our approach is all part of reducing the risk of cutting into the concrete structure and into the steel, during the pavement milling process. Not only would this damage the bridge deck but the profiling machine too.

Advantages

The benefits of our approach include:

  • No traffic control or lane closure is required, meaning traffic isn t interrupted, highway workers aren t exposed to safety hazards and costs are dramatically reduced.
  • No invasive destructive coring to calibrate
  • Calculates pavement layer depths to a high accuracy

If bridges are in close proximity, we maybe able to assess multiple bridges within the same project.

Our clients include government road authorities, private asset owners, airports, ports, civil contractors, civil engineering consultants and utility companies.

What outputs do I get?

We provide easy to read reports summarising all key findings and anomalies. We also provide:

  • ASCII Files Compatible with other Software and Databases
  • Excel Spreadsheets
  • Geospatial Mapping

How does our Ground Penetrating Radar (GPR) work?

Our GPR system has antennas mounted on a moving vehicle. The antennas transmit short pulses of radio wave energy into the pavement. As the energy travels through the pavement structure, it creates a reflection when it hits different materials, such as asphalt to crushed rock. The strength of the reflections, and the time it takes to travel through the concrete can be used to calculate the thickness and other properties.

To find out more, Contact Us.

Trusted by our clients

CPB Contractors
Select Plant Hire (Laing O'Rourke)
Department of Defence
Royal Australian Air Force
Department of Transport and Main Roads QLD
Progress Rail Services
GHD
Fulton Hogan
STATS Australia
Golder Associates
Construction Sciences Pty Ltd
FSG Geotechnics
Downer EDI Logo
Fletcher Construction
Road Science
Civil Innovation
Global Synthetics
SMEC
Tailcon Projects
Chadwick Geotechnics
WANT Geotechnics
A&Y Associates
Ground Science Pty Ltd
Tasman Geotechnics
CPTS
Civiltest Pty Ltd
Tonkin & Taylor
Douglas Partners
Queensland Rail
CivilPlus Constructions Pty Ltd
Rio Tinto
Fortescue Metals Group
First Solar
Colas Australia Group
Wakefield Regional Council
CMW Geosciences
LBS Engineering
Protest Engineering
Red Earth Engineering
WSP Australia
Boom Logistics
Global Engineering & Construction
MPC Kinetic
South 32
Transport for NSW - Sydney Trains
Future Generations
Senversa
RJE Global
Macquarie Geotechnical
Kleinfelder
Jacobs
Geo Environmental Solutions
ENGEO
Durkin
Contract Power Group
Bland Shire Council
Betta Roads
Arcos Group
SMS Geotechnical
Aurecon
ADE Consulting Group
Australian Rail Track Corporation Ltd
Plateway Pty Ltd
Butler Partners Pty Ltd
4D Geotechnics Pty Ltd
AMB Geotech SQS Pty Ltd
ATC Williams Pty Ltd
Australian Geotechnical Testing
Australian Soil and Concrete Testing Pty Ltd
BHP Nickel West
Black Insitu Testing
Bloxam Burnett & Olliver Ltd
Calibre Global
Cartwheel Minerals Pty Ltd
CMT Engineers
Consolidated Power Projects Australia
CQUniversity Australia
D&N Geotechnical
Dynamic Compaction Solutions
ETS Geo
Evolution Mining: Northparkes
Finnish Overseas Consultants Ltd
Galt Geotechnics Pty Ltd
Geolab
Geotech International
Geotechnical Testing Services Pty Ltd
HEB Constructions
Hunter Civilab
Keller Pty Ltd
KMK Geotechnics
Local Geotechnics
Mitchell Water Australia
Ora Banda Mining
Pardo Engineering
Pearce Geotechnical
Powerlink
Qualtest Laboratory Pty Ltd
Queensland University of Technology
Te Ahu a Turanga Alliance _ Fulton Hogan

Our Supply Partners:

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