Infrastructure inspection and maintenance

Bridge, water, tower and tank inspection across New Zealand, from NZTA S6 through to confined space entry. Rope access and drone survey, without closing the asset.

Rope access technician repairing steel infrastructure

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Inspection and maintenance across long asset cycles

Infrastructure assets are managed on long cycles: routine inspection, condition monitoring, protective coating renewal, structural upgrades, and the repairs that come out of them. The parts that matter are usually the hardest and most disruptive to reach. I.A Solutions inspects, maintains and upgrades those assets without taking them out of service, using rope access, drone survey and non-destructive testing. Findings are documented to the standard the asset sits under, including NZTA S6 for bridges.

What we do on infrastructure assets

These cover routine inspection, condition monitoring, and the maintenance and upgrade work that follows. Most scopes combine several, delivered in one mobilisation to reduce access and traffic management cost.

Rope access technician inspecting bridge infrastructure

Bridge and infrastructure inspections

Inspections completed to the standard the asset sits under, by NZIHT trained bridge inspection technicians.

  • General, principal and special

  • Structural steel and concrete

  • Piers, abutments, crossbeams, soffits

Rope access technician inspecting bridge infrastructure

Bridge and infrastructure inspections

Inspections completed to the standard the asset sits under, by NZIHT trained bridge inspection technicians.

  • General, principal and special

  • Structural steel and concrete

  • Piers, abutments, crossbeams, soffits

Rope access technician inspecting bridge infrastructure

Bridge and infrastructure inspections

Inspections completed to the standard the asset sits under, by NZIHT trained bridge inspection technicians.

  • General, principal and special

  • Structural steel and concrete

  • Piers, abutments, crossbeams, soffits

Technician mapping defects and taking measurements

Measurements, NDT and defect mapping

Testing that reaches inside the element, where the concern is section loss or cracking rather than surface damage.

  • Ultrasonic thickness testing

  • Magnetic particle and dye penetrant

  • Concrete scanning and thermal imaging

  • Measurements and defect mapping

Technician mapping defects and taking measurements

Measurements, NDT and defect mapping

Testing that reaches inside the element, where the concern is section loss or cracking rather than surface damage.

  • Ultrasonic thickness testing

  • Magnetic particle and dye penetrant

  • Concrete scanning and thermal imaging

  • Measurements and defect mapping

Technician mapping defects and taking measurements

Measurements, NDT and defect mapping

Testing that reaches inside the element, where the concern is section loss or cracking rather than surface damage.

  • Ultrasonic thickness testing

  • Magnetic particle and dye penetrant

  • Concrete scanning and thermal imaging

  • Measurements and defect mapping

Inspection of structural bearings, joints and connections

Bearings, joints and connections

A failed deck joint puts water onto the bearings below, so these elements are inspected and repaired together.

  • Bearing and joint inspection

  • Bolt replacement and tightening

  • Joint, drainage and waterproofing

  • Structural component repairs

Inspection of structural bearings, joints and connections

Bearings, joints and connections

A failed deck joint puts water onto the bearings below, so these elements are inspected and repaired together.

  • Bearing and joint inspection

  • Bolt replacement and tightening

  • Joint, drainage and waterproofing

  • Structural component repairs

Inspection of structural bearings, joints and connections

Bearings, joints and connections

A failed deck joint puts water onto the bearings below, so these elements are inspected and repaired together.

  • Bearing and joint inspection

  • Bolt replacement and tightening

  • Joint, drainage and waterproofing

  • Structural component repairs

Concrete and masonry repair work

Concrete and masonry repairs

Repairs to spalling, cracking and deteriorated concrete, with scanning first where reinforcement affects the method.

  • Spalling repairs

  • Crack and epoxy injection

  • Render reinstatement and core drilling

Concrete and masonry repair work

Concrete and masonry repairs

Repairs to spalling, cracking and deteriorated concrete, with scanning first where reinforcement affects the method.

  • Spalling repairs

  • Crack and epoxy injection

  • Render reinstatement and core drilling

Concrete and masonry repair work

Concrete and masonry repairs

Repairs to spalling, cracking and deteriorated concrete, with scanning first where reinforcement affects the method.

  • Spalling repairs

  • Crack and epoxy injection

  • Render reinstatement and core drilling

Coating, corrosion treatment and surface washing

Coatings, corrosion and washing

Surface protection that slows deterioration on exposed steel and concrete between inspection cycles.

  • Protective coatings and recoating

  • Corrosion removal and treatment

  • Bridge washing and maintenance

Coating, corrosion treatment and surface washing

Coatings, corrosion and washing

Surface protection that slows deterioration on exposed steel and concrete between inspection cycles.

  • Protective coatings and recoating

  • Corrosion removal and treatment

  • Bridge washing and maintenance

Coating, corrosion treatment and surface washing

Coatings, corrosion and washing

Surface protection that slows deterioration on exposed steel and concrete between inspection cycles.

  • Protective coatings and recoating

  • Corrosion removal and treatment

  • Bridge washing and maintenance

Assets we work on

Most of these assets stay open to the public while we work on them, which shapes both the access method and the timing. We inspect to the standard the asset sits under, including NZTA S6 for bridges, then carry out the concrete, steel, joint and coating repairs that come out of it. Rope access and drone survey remove the under-bridge unit and the lane closure that usually drive the cost.

Bridges and road structures

Bridges and road structures

Water reservoirs and tanks

Water reservoirs and tanks

Water and wastewater infrastructure

Water and wastewater infrastructure

Pump stations

Pump stations

Wharves and port structures

Wharves and port structures

Retaining structures

Retaining structures

Transmission and telecom towers

Transmission and telecom towers

Commercial and office buildings

Apartment and residential towers

Retail and mixed-use premises

Body corporate properties

Tanks, silos and vessels

Pipework and pipe supports

Chimneys, stacks and ducts

Gantry cranes and structures

Processing plant structures

An abseiler during repair work a steel bridge with a grinder
A technician working on the outside of a highrise building
An inspection being done by a rope access technician
An absieler working on a large concrete tank

Examples of our projects and capabilities

See how we tackle some of New Zealand’s toughest access, inspection, and maintenance challenges. From high-rises to bridges and industrial plants, follow our latest projects and innovations in action.

Why asset owners choose I.A Solutions

Access and documentation drive the cost of infrastructure work. These are the differences that show up in both.

Access without closures

Rope access and drone survey mean no scaffold, no lane closures, and no shutting the asset down to find out what condition it is in.

Access without closures

Rope access and drone survey mean no scaffold, no lane closures, and no shutting the asset down to find out what condition it is in.

Inspected to the right standard

NZTA S6 bridge inspections, NDT certification and confined space competency held in-house, so the report stands up when it is reviewed.

Inspected to the right standard

NZTA S6 bridge inspections, NDT certification and confined space competency held in-house, so the report stands up when it is reviewed.

Reporting built for asset owners

Condition data structured for planning and budgeting, with photographic evidence and clear recommendations rather than an undated set of images.

Reporting built for asset owners

Condition data structured for planning and budgeting, with photographic evidence and clear recommendations rather than an undated set of images.

Upgrades on the same access

Coating renewal, guard rail replacement and structural upgrades run off the same rope access setup as the inspection that identified them.

Upgrades on the same access

Coating renewal, guard rail replacement and structural upgrades run off the same rope access setup as the inspection that identified them.

Infrastructure inspection and maintenance work

Our accreditations

Bridge inspections are completed by NZIHT trained bridge inspection technicians, and non-destructive testing by technicians holding PCN, AINDT or CSWIP certification. The company is Totika accredited and Impac Prequal assessed.

Who we work for

We work for councils, road controlling authorities, port and infrastructure asset owners, and the engineering consultancies that advise them.

Fifteen years and 340+ projects completed on bridges, reservoirs, transmission towers and tanks, most of it delivered without taking the asset out of service.

Where we work

Our crews work regularly in Auckland, Wellington, Christchurch, Hamilton and Tauranga, and travel to sites throughout New Zealand. Network-wide scopes are planned into a single mobilisation where that reduces travel cost.

Specialist infrastructure maintenance work

Our capabilities for your project are limitless

Discover our streamlined process for providing all your needs for your project or building.

A harnessed worker under the overhand from a highrise doing maintenance work

Access

Step 01

If access is a challenge to your project, I.A Solutions provides the solution. Our point of difference is combining rope access, height safety and specialist systems to deliver safe, efficient results.

Access

Step 01

If access is a challenge to your project, I.A Solutions provides the solution. Our point of difference is combining rope access, height safety and specialist systems to deliver safe, efficient results.

Access

Step 01

If access is a challenge to your project, I.A Solutions provides the solution. Our point of difference is combining rope access, height safety and specialist systems to deliver safe, efficient results.

Inspect

Step 02

Certified inspectors use advanced techniques such as NDT, thermography, and drone surveys to provide accurate data for smarter asset management decisions.

Inspect

Step 02

Certified inspectors use advanced techniques such as NDT, thermography, and drone surveys to provide accurate data for smarter asset management decisions.

Inspect

Step 02

Certified inspectors use advanced techniques such as NDT, thermography, and drone surveys to provide accurate data for smarter asset management decisions.

Maintain

Step 03

Our trade-qualified teams carry out specialist repairs and remedial works, restoring integrity and extending asset life while ensuring full compliance.

Maintain

Step 03

Our trade-qualified teams carry out specialist repairs and remedial works, restoring integrity and extending asset life while ensuring full compliance.

Maintain

Step 03

Our trade-qualified teams carry out specialist repairs and remedial works, restoring integrity and extending asset life while ensuring full compliance.

Frequently Asked Questions

What does an NZTA S6 bridge inspection involve?

What does an NZTA S6 bridge inspection involve?

Can you inspect assets without closing the road or shutting the site down?

Can you inspect assets without closing the road or shutting the site down?

What NDT methods do you use on infrastructure?

What NDT methods do you use on infrastructure?

Do you inspect tanks and confined spaces?

Do you inspect tanks and confined spaces?

Can you complete repairs found during an inspection?

Can you complete repairs found during an inspection?