DAKK Robot

Inspire (Structures) Ltd are passionate in our belief that we must give asset owners the information they need in order to assess the condition of a structure in the safest, most efficient way possible.

Our CCTV equipment is designed to access culverts and bridges without the need to dewater / desilt. It is also portable and lightweight and can be safely carried to site by two people, reducing the need to arrange track access or vehicular access.


The story of DAKK CCTV equipment


Our vast expertise in the examination of various structures made us very familiar with the difficulties experienced in inspecting culverts. There used to be 3 options available, each with limitations/disadvantages:

We decided that a fourth option was needed:

A CCTV examination using light weight portable equipment which could climb over obstacles such as bricks, stones and silt, and float on water.

We built and robustly tested prototypes until we were satisfied we had a solution. Network Rail acknowledge the value of our DAKK system, and since it’s creation in 2016, we have examined over 500 culverts with this technology.

DAKK CCTV is also ideal for examining flooded bridges, or bridges where it could be unsafe to send in divers.

Our UK-built bespoke DAKK CCTV solution is specifically designed for culverts which contain silt, water and debris and gives proven delivery using the highest quality CCTV equipment, while providing asset owners with the detailed information required on the condition of structures. This enables effective asset management decisions to be made.

It’s often not possible to use standard CCTV systems in structures like railway culverts as they are designed for clear, clean pipelines and are unable to cope with the conditions found in railway culverts. Our DAKK range was developed in collaboration with STE4 examiners who had experienced problems occurring when off-the-shelf systems are used.

We currently offer four DAKK unit models, capable of providing video and sensor data in real time and having the ability to be further equipped with a range of application sensors. Units can be used for examination purposes and can also test air quality within these confined spaces. We are presently developing further models.

Our current range consists of:


Crawler DAKK


This is our largest unit, with capabilities to negotiate difficult terrain and overcome the types of obstacles found within culverts. It is a lightweight, standalone unit and fits into two-wheeled containers which can be transported to site in a small van or estate car.

The rimless wheel on our Crawler DAKK makes it possible for the unit to climb over debris of any kind, unlike traditional wheeled crawlers which struggle with debris like rocks, bricks and branches. Find out more here with our Case Studies.




This is a simple, mobile CCTV system which is battery-operated and was developed for the inspection of difficult culverts with limited clearance, which are difficult to access. Push DAKK is a highly portable solution and floats on water, making it ideal for small or flooded structures.

Push DAKK is the smallest unit in our range and utilised when culvert clearances hinder our other crawlers, or if water levels are too high and submerge cameras on our other crawler units. Find out more here with our Case Studies.




This is a versatile, mobile floating robot, specifically developed for the inspection of flooded structures. It has successfully examined bridges where toxic gases or restricted headroom prevented human entry. Aqua DAKK is robust, waterproof and simple to control. When in use, the camera remains above the water which ensures the clarity of images sent back for analysis.

Aqua DAKK has a low system weight and high-power motors, allowing it to move effortlessly and efficiently; while its tethered power supply ensures an indefinite run time. Find out more here with our Case Studies.




This unit was designed for examination of small culverts and culverts and those with reduced clearance, as these are unsuited for the Crawler DAKK. The rubber spiked tracks on the unit increase traction and ground clearance within silty culverts, and the unit is capable of climbing over obstacles.

Trak Dakk fits into two backpacks which are easily carried to sites by 2 people. Find out more here with our Case Studies.

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