TEL: +44 (0) 845 600 6 300

During the inspection Highway Management Maintenance (HMM) monitor the condition of the structure and identify any minor or emergency works that may be required. these works are prioritised and advised to the client for approval before being undertaken if requested.

Specialist Services

Through our flexible approach, based on working in partnership, we are able to provide a range of specialist services that Highway Management Maintenance (HMM) can tailor to meet the individual needs of current and future customers.

We operate both as a managing agent and as a managing agent contractor, working to deliver best value and measurable improvements in the performance, reliability and safety of the road network.

Our specialist service solutions are developed for each client individually thus leaving companies to focus on their core business knowing that their asset infrastructure requirements are being met.


  • General and Principal Structural Inspections including Electrical Inspections
  • Confined Spaces Operations for Inspections and General Works
  • Variable and Information Message Signs
  • Abnormal Load Escort Vehicles
  • Safety Patrols
  • Barrier Repairs


HMM carry out 'General Inspections' on all structures every two years and Principal Inspections every six years.

The purpose of carrying out inspections is to ensure the safety and long term serviceability of all Highway Structures.

A general inspection is a visual inspection and a principal inspection is a close detailed inspection that often involves testing of the structure. Diving inspections may also be required on culverts or bridges depending upon water levels and this can also be sourced through the HMM supply chain of specialised sub-contractors.

During the inspection HMM monitor the condition of the structure and identify any minor or emergency works that may be required. These works are prioritised and advised to the Client for approval before being undertaken if requested.

Operatives are trained to City and Guilds Confined Space Standard for under bridge access, confined spaces and emergency descent equipment. Many workplaces contain spaces that are considered "confined" because their configurations hinder the activities of employees who must enter, work in, and exit them. A confined space has limited or restricted means for entry or exit, and it is not designed for continuous employee occupancy.


Confined spaces include, but are not limited to:- underground vaults, tanks, storage bins, manholes, pits, silos, process vessels, and pipelines or contains any other recognised safety or health hazard, such as unguarded machinery, exposed live wires, or heat stress. HMM carry out work in some of these conditions using the required safety apparatus or use the services of specialised sub-contractors.


The primary purpose of Text Based Roadside Variable Message Signs and Matrix Signals (more commonly known as VMS) is to communicate information and advice to drivers about emergencies, incidents and network management, aimed at improving safety and minimising the impact of congestion.

HMM supply temporary information signs and VMS for occasions that can cause traffic disruption eg concerts, major events etc and they can be hired for both short and long term use. Messages can be changed over the Internet to reflect either changing conditions or time related requirements.


HMM provides abnormal load escort vehicles with trained staff for escorted travel on the roads of Northern Ireland and others if required. We also approve abnormal loads for travel inside the limits of the DBFO 1 Project Road.

Vehicles are fitted with warning beacons, rear high visibility markings and are clearly marked to identify that it is an escort vehicle. (The escort vehicle must not form any part of the units carrying or hauling the abnormal load).


These patrols can either be carried out on foot or vehicular depending on site and client requirements. In busy sections of road or areas used by the public they are used for early identification of safety hazards and for quick repairs. This ensures a safe environment for the public and maintains information for checking the viability of personal injury claims.


HMM have in-house trained operatives and also use a dedicated supply chain to repair and install a variety of barrier types including Temporary Vehicle Safety Barrier for Emergency Response situations. Tension Corrugated Beam (TCB) and Open Box Beam (OBB).