Email all enquiries to: testing@hendersonthomas.co.uk

Bridge Investigation Experts

Construction Details determined by Innovative NDT

Bridges are complex in nature and makeup, plus accessing and completing such works requires careful planning, therefore it is paramount to employ a company who can competently fulfil all requirements.

HTA have over 30 years of bridge investigation experience offering a Multi Disciplined & Multi Skilled Approach removing the necessity of having multiple companies on site and the required management of various operations.


Maximise projects & minimise problems
with HTA as the Principal Contractor
alongside provisional reports within 24 hours


We supply the following Investigations:

Bridge Investigation by HTA
  • GPR Surveys - to determine reinforcement configurations (multiple layers), detection of voids, cracks and dimensions of elements
  • 'PTSI' - investigations required to determine condition of post tensioned structural elements
  • Half Joint Investigations - innovative NDT to determine the condition of half joints
  • Load Bearing Assessment - innovative NDT to determine construction details & removal of samples for strength testing
  • Confined Space Investigation - supply of trained & certificated staff to carry out investigations; inc safety & escape equipment
  • Pre-stressed Beams - exposure of beam ends to determine strand pattern
  • Coring Investigations - to determine element thicknesses such as; deck, abutments and arch rings
  • Scour Investigation - determining foundation details via coring for scour assessments
  • Black top & Waterproofing - to determine thickness and condition via trail holes and coring
  • Trial Pits - to determine buried construction details
  • GeoTech - to determine ground conditions and load bearing assessment

Maximise any of the above with the following:

HTA can provide a Full Remit of services, removing the hassle of managing multiple companies on site and are able to undertake and supply the following:

  • Traffic Management - accurately determining the condition of various bridge construction types and materials
  • Access including
    1. - MEWPS
      - Mobile Scaffold
      - Underbridge Units
      - Roped Access
      - Drones
  • Working near water supply
    1. - Pontoons
      - Safety Boats
      - 'RYA' & 'DEFRA" Cerificated & Trained Staff
      - Roped Access
      - Drones
  • Reinstatement including
    1. - Concrete
      - Masonry & Brickwork
      - Waterproofing
      - Trial Pits
      - Carriageway surfacing

Watch HTA carrying out Night shift Coring Work

To determine the Arch Thickness plus acquire Dust Samples

Watch more videos of the HTA crew at work by clicking here


Take advantage of our Open Door Policy

Even if you do not end up using HTA we are happy to advise on the best course of action for the outcome you wish to achieve.

It is impossible for one company to carry out every project, however we can share our expertise far and wide.

Call: 01555 771 525 or Email: testing@hendersonthomas.co.uk