Construction of the section Bralos – Amfissa Motorway

Location Central Greece
Project Duration 2023 to 2026
Industry Infrastructure Transportation
Client AVAX S.A.

The project, with an overall length of 24 kilometres and an estimated budget of €340 million, is being developed in alignment with state-of-the-art environmental specifications and engineering standards. It is strategically positioned to enhance interregional connectivity between Central and Northern Greece and the western part of the country.

Detailed Scope of Services
  • Final Roadway Design for the 24 km long main Motorway and side road network
  • Final Roadway Design for 5 At-Grade Intechanges
  • Final Design of Road Signage and Safety Installations (RSS) 
  • Tunnel Engineering. Final Design for Excavation and Temporary Support, and Structural Design of Permanent Lining
  • Detailed Structural and Architectural Design of tunnel service buildings
  • Geotechnical Design. Evaluation of prior geotechnical investigation campaigns. Geotechnical Design of earthworks. Foundation Design of Structures
  • Final Structural Design of 6 Bridges and 2 Underpasses and 2 Overpasses

Design services encompassed the full elaboration of Structural, Transportation, Geotechnical, Architectural, and Safety Designs for the entire project. This included roadway and interchange design, bridge and overpass structures, tunnel excavation and lining, earthworks and retaining systems, as well as tunnel service buildings and road safety infrastructure. All designs were developed in accordance with current engineering standards and project specifications, ensuring the functionality, safety, and durability of the infrastructure works.

Tunnel excavation chamber with drilling machine and two workers wearing safety gear
Tunnel portal under construction with drilling rigs and a large pipe exiting the rock face
Mining tunnel portal with two large ventilation ducts, trucks, and a wheel loader at a quarry site
Aerial view of a tunnel excavation site with two tunnel portals, heavy equipment, and site containers
Aerial view of a highway overpass under construction beside a rural road and olive grove
Construction site with concrete bridge piers and abutments in a mountainous valley
Aerial view of a bridge construction site with concrete piers, precast beams, access roads, and material storage in wooded t…
Aerial view of a partially built road cut through wooded hillsides.
Road under construction between rock cuttings with concrete bridge abutments and a dirt access track
Retaining wall under construction on a mountain road, with a bulldozer on site
Construction of a concrete viaduct with piers and precast bridge segments in a wooded valley
27 kmLength of Motorway
2No. of Tunnels
9.2 kmTotal tunnel length
6No. of Bridges
4No. of Overpasses / Underpasses

Technical Specifications

Length of Tunnel 1 4300 m underground + 92 m Cut & Cover
Length of Tunnel 2 4890 m underground + 75 m Cut & Cover
Bridge lengths Bridge 1: 330 m, Bridge 3: 57 m, Bridge 4: 36 m, Bridge 6: 89 m, Bridge 7: 36 m, Bridge 8: 380 m
Length of Motorway in deep cuts approx. 9 km
Length of Motorway on high embankments approx. 2 km
Max. MSE embankment height 29 m
No. of Overpasses / Underpasses 2 / 2 (4 total)

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