There will be workshops and sessions along with information on ongoing and future major projects in Athens and in Greece see below:  

New Metro Athens Line 4:

12.8 km, 15 stations, 9 intermediate and/or terminal shafts, 2 x EPB TBM ø9.53m,  C&C up to 52m excavation depth, NATM Sections up to 250sq.m excavation, Budget 65 billion, Time schedule: 8 years 

Extensions of Athens Metro Line 4 

• 20 stations, 23 Km double track tunnel, Estimated budget 2.05bn 

• Goudi Marousi (red): 8 stations, 9 Km tunnel. Estimated budget 800m. 

• Evagelismos Ano Helioupoli (green): 3 stations, 3.5 Km tunnel. Estimated budget 350m. 

• AlsosVeikou Petroupoli (mauve) : 6 stations,7 Km tunnel. Estimated budget 600m. 

• MarousiA1 motorway (blue): 3 stations, 3.5 Km tunnel. Estimated budget 300m. 

Extension of Line 2 to Ilion and Eleonas Depot Extension 

• Line 2 northern extension of 4 km, 3 stations 

• 20,000m2 extension of Eleonas Depot in Line 3 with stabling and maintenance facilities 

• Budget : 600 million, Duration : 6 years 

• Special point : The Line 2 extension will deviate from the existing Line 2 Anthoupoli forestation tunnel which will need to be demolished to form a junction. This is to avoid a chartered maze of old lignite mines. Click gr/14 for tunnelbuilder tender archive. 

The Hellinikon project underground coastal road 

Project Characteristics : Fully private project of public interest implemented by the investor. Completion is scheduled at the end of 2024. Total length 1.34Km (1.14 C&C 0.2 access and exit ramps). 3 traffic lanes per direction (locally 4 and 5).  

Underground construction of national railway line in Athens 

Four track rail corridor, 2,36 km long, of which 1.91Km consists of a fully underground alignment,  Public Contract value 70M .

Connection of Attiki Odos to A1 motorway Kymis tunnel 

The Project was assigned last year to the Consortium “Terna Aktor Intrakat'' but due to judicial conflict, no contract has been signed yet. Project budget 400m. 

• Total length 3.8Km (1.26Km conventional tunnel in urban residential area, 1.16 Km C&C, 1.38 open road). 

• Critical traffic project to decongest the only exit to the A1. 

• A modern traffic management system to avoid congestion. 

Thessaloniki metro / Base project & extension to Kalamaria (gr/13 for tunnelbuilder tender archive) 

• 9,6 km , 13 stations 

• 1 Depot  

• 1 Operations Control Centre 

• 1 Lumpsum Turnkey Contract 

• 1,66 billion 

• Contractors: Aktor Webuilde/Hitachi Rail  

• 4,8 km , 5 stations 

• 6 Lumpsum Contracts 

• 540 million 

• Main Contractor: AKTOR 

Thessaloniki metro new extensions 

• Two extensions in preparatory design. East extension to Pylaea and airport (4 stations / 

Cyan line) and west extension to Evosmos (8 stations round line Orang line). 

• 11 km of Line (with two single track tunnels) 

Northern Road Axis of Creta Island 

• Section Chania Heraklion 156Km (concession contract) 1.5b cost (design & construction) 

• 16 twin tube tunnels 31.5 Km long single tube 

• 18 C&C (5 Km length) 

• Section Hersonissos Neapoli 23 Km (PPP contract) 230m cost (design & construction) 

• 3 twin tube tunnels 6,8 Km long single tube 

• 1 C&C (0,25 Km length) 

Thessaloniki East Ring Road (Flyover) 

• Project budget 370m, Total length 13 Km 

• 4 Km Flyover, 9 Interchanges, 8 Bridges, 3 Tunnels 

• PPP contract was signed in December 2022 with Contractor Consortium. 

Future projects: 

South extension of Ymittos Ring Road from connection with Attiki Odos to Vouliagmenis Avenue via an urban tunnel 

Construction of a 3Km long urban road tunnel connecting existing Ymittos Ring Road with Vouliagmenis Avenue, It seems that the intention is to promote the contract as an innovation partnership once the relevant legal framework has been adopted 

North extension of Ymittos Ring Road to Rafina port and north entrance of Athens airport and suburban railway access to the port of Rafina 

• Twin bore Road tunnel 1.6Km 

• Suburban railway tunnel in residential area ending at Rafina port 1.3 km 

• Call for tender at the end of 2022. 

Salamina undersea tunnel 

• 1.1Km long twin spaces plus central corridor immersed tunnel 

• 2 conventional tunnels 4.5 Km long single tube 

• 2 C&C 0.5 Km long 

• Three consortia filed a bid for this Project. The Environmental Impact Assessment study of the project is at the phase of approval and following that the tendering process is expected to finalize. 

Lefkada Island undersea tunnel (click gr/39 for tunnelbuilder tender archive) 

• Bidirectional immersed tunnel 0.7Km (shallow depth of seabed small wave height in situ concreting) 

• 3Km bidirectional road in Avlemon lagoon 

Motorway E65 twin tube road tunnels 

• Tunnel Othryos : tunnel 6 Km long (single tube) 

• 2 tunnels with total length 1 Km (single tube) 

Other regional road tunnels 

• Road tunnel (Klissouras ) 1.36 km long in the highway connecting the towns of Castoria and Ptolemais in north Greece is at the final phase before contract signing with the contractor AKTOR SA. The cost will be approx. 71 million euros with EU funding while the construction period is estimated to 36 months. 

• 2 Tunnels Brallos Amfissa 5 Km long. Funding alternatives are considered 

Igoumenitsa bypass road tunnels 

• C&C 1, length 317m 

• C&C S1, length 160m 

• Tunnel S1, length 231m 

• Tunnel S2, length 277m 

• Tunnel S3, length 531m 

Click here for more details on the highlights, ITACET training courses and on technical visits. Visit https://wtc2023.gr/. 17/23.