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Cambodia Airports/SCA, a subsidiary of VINCI Airports.


The number of passengers going through Cambodia’s international airports – namely Phnom Penh, Sihanoukville and Siem Reap – has experienced double to triple-digit growth over recent years. The three airports together serve 55+ destinations with 700 regular flights per week.

All three airports are operated by Cambodia Airports/SCA. However, they have different types of traffic and serve regions with distinct features and interests that are popular with both tourists and business visitors. They are each key to the country’s economic growth and regional development. Phnom Penh is the airport of the capital city, while Sihanoukville is close to the main seaside resorts and Special Economic Zone. Siem Reap is the gateway to the famous Angkor temples.

To cope with current and anticipated traffic growth and to further improve services at the airports, Cambodia Airports launched investment programmes to expand passenger facilities and refurbish airside infrastructure. Egis was contracted to assist.

Role of Egis

Egis assisted the operational and technical teams of Cambodia Airports from design review stage right through to completion of each of the required infrastructure works.  Particular attention was paid to safety management and impact on airport operations, given that the works were taking place in a ‘live environment’ so needed to allow for minimum disruption and specific slots at night.


In Siem Reap, the project which started in 2016 involved rehabilitation of existing airside facilities. The key works needed were:

  • Strengthening the existing runway;
  • Widening the shoulder up to 7.5m and creating a blast pad at both extremities of the runway;
  • Creating a blast pad as well as a RESA (Runway End Safety Area) at both thresholds of the runway;
  • Adding two new taxiway entrances including box culvert;
  • Levelling the runway strip;
  • Creating a service road alongside the runway;
  • Upgrading the threshold 05 approach lighting system to comply with CATI approach requirements;
  • Upgrading the threshold 23 simplified approach lighting system;
  • Updating the whole airfield lighting with LED technology.

For the design, Egis services consisted of:

  • Performing the preliminary infrastructure design of runway and existing taxiways: asphalt overlay design (including shoulder widening, blast pad, RESA), new taxiways creation and strip levelling;
  • Performing the preliminary and the detailed designs for the AGL systems, including an audit of the existing airfield lighting and equipment (lights, control system, signs, power supply, isolation, photometric control…).

For work supervision our responsibilities to Cambodia Airports/SCA included:

  • Setting up safety procedures before the beginning of the works;
  • Maintaining daily safety conditions (night works) following runway reopening;
  • Assisting SCA Technical Project Management with daily works supervision (night works).


In Phnom Penh and Sihanoukville, projects respectively started in 2017 and 2018. We provided project management, design and works supervision services for the runway overlay project, including:

  • Preliminary infrastructure and detailed designs; drawing and technical assistance.
  • Airfield lighting audit, drawing and technical assistance.

In Sihanoukville, works also included runway extension to accommodate code E aircraft types such as Airbus A350 and Boeing B777. In parallel with the runway extension project, we were selected to provide project management consultancy for the design and construction of a new 40,000m² terminal along with a new apron and new airport access on the city side.

We appointed a resident Project Manager for the different runway projects and a resident team with particular expertise in building engineering for the new terminal and airport access project in Sihanoukville.


At all three airports, excellent coordination between the Egis teams based in France in charge of the design and technical assistance, the resident Project Manager in Cambodia and the local airport operations teams have contributed to the success of the projects.

The airports remained open throughout the projects, with works undertaken at night to limit disruption to air traffic and operations. No safety issues due to works were reported and works never delayed reopening to traffic in the morning.


At Sihanoukville airport, the Cambodia Airports/SCA team completed work a month ahead of schedule, with a refurbished and extended runway (from 2,500m to 3,300m) commissioned in mid-2020 despite potential delays due to the COVID-19 crisis and its impact on resources and operations.

Here are some figures to help put this runway rehabilitation project in perspective:


In Siem Reap, the project was completed in less than a year, highlights below:

In Phnom Penh the project to refurbish the airport runway was completed in a record time of seven months, with no interruption to traffic.

Read more:

Cambodia Airports video of the new runway at Sihanouk International Airport

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Mathieu Sellier

Mathieu Sellier

Project Manager

+33 (0)5 62 24 56 00