Highways

Thessaloniki Flyover (Eastern Inner Ring Road upgrade, K5 – K12)

Public-private partnership upgrade of the eastern Inner Ring Road (Periferiaki) of Thessaloniki between junctions K5 and K12: about 13 km of rebuilt and widened road, an elevated expressway, nine grade-separated interchanges and new bridges and tunnels. The contract was signed on 19 December 2022 with a budget of €373.2 million (excluding VAT per later press) and four years of construction. In April 2026 progress was reported above 50%, with delivery targeted for spring 2027.

Total length: 13 km
Open today: 0 km
Sections: 1
Cost on record: €411.312M; 1 of 1 sections carry a comparable figure

Restated into EUR at 2025 prices.

Sections

Sections of Thessaloniki Flyover (Eastern Inner Ring Road upgrade, K5 – K12): status, length, dates, cost, funding and contractors
Sections	Status	Length	Timeline	Cost	Funding	Contractors	Contract terms
Eastern Inner Ring Road: junction K5 – junction K12 Upgrade of the existing Inner Ring Road (A24) between junction K5 (Papageorgiou) and junction K12 (Charilaou–Moudanion). The PPP documents give 13 km; the contractor's presentation, quoted on 22 April 2026, gives 12 km of works, 9 grade-separated interchanges, 7.6 km of elevated avenue including its access ramps, 4 km of rapid-traffic bridge, 9 bridges, 2 covered structures and 1 tunnel. At signing the elevated road was given as 4 km, with 10 new bridges and 3 new tunnels. The construction duration is four years; no construction start date was found. Press reports give May 2027 for completion; the source calls the secure schedule 'spring 2027'. The contractor and concessionaire are not named in the sources found. Geometry follows one carriageway of the existing road from K5 to K12 and measures about 12.8 km; the elevated structures are not drawn separately. 1 2 3	Under construction 46 of 48 contracted months	13 km	Dec 19, 2022Tender awarded ≈2026Expected openingProjected from contract	Estimated €373.2M(2022)Budget of the PPP as stated at signing (ypodomes.com) and described as an estimate in April 2026 (huffingtonpost.gr), excluding VAT (about €462 million with VAT).	Public-private partnershipPublic-private partnership: four years of construction, then maintenance under the concession (ypodomes.com, 19 December 2022). An additional €81 million for compensation and supplementary works was reported on 21 April 2026 (huffingtonpost.gr).	–	48 mo execution

Funding

Public-private partnership13 km
1 section
- Public-private partnership: four years of construction, then maintenance under the concession (ypodomes.com, 19 December 2022). An additional €81 million for compensation and supplementary works was reported on 21 April 2026 (huffingtonpost.gr).

A section that lists two sources counts its full length under each: the data records which sources paid, not what share each one carried.

Related projects

Sources

Figures last checked against their sources in Oct 5, 2026.