# Ellinikon urban redevelopment and infrastructure

> Developing situation record from CLSTR: https://clstr.news/situations/ellinikon-urban-redevelopment-and-infrastructure
> Updated: 2026-10-20T16:23:45.000Z. Sources: 8. Developments: 2.

The Ellinikon urban redevelopment project in Athens is progressing through major infrastructure upgrades, specifically the undergrounding of Poseidonos Avenue. Following the completion of a Sports Park in July 2026, development focus has moved toward the Little Athens residential neighborhood, with residents expected by early 2027.

The Poseidonos Avenue project involves constructing a 1.15-kilometer, six-lane tunnel designed to bypass congested sections and eliminate six traffic lights. According to the Elliniko-Argyroupoli Municipality, this intervention aims to transform southern Athens by reducing travel times to the coastline from at least 25 minutes to only a few minutes. The tunnel will eventually integrate with a broader 12-lane coastal road network to connect existing neighborhoods with the new Ellinikon development.

## Timeline

### 2026-10-20: Poseidonos Avenue undergrounding to transform Southern Athens traffic

The undergrounding of Poseidonos Avenue in Elliniko aims to reduce traffic congestion and provide rapid access to the coast, connecting Southern Athens neighborhoods to the sea in minutes.

5 sources. https://clstr.news/cluster/poseidonos-avenue-undergrounding-to-transform-southern-athens-traffic

### 2026-09-21: The Ellinikon redevelopment advances with Poseidonos Avenue undergrounding

Work continues at The Ellinikon in Athens, featuring the undergrounding of Poseidonos Avenue via a new 1.15km tunnel to reduce traffic congestion.

3 sources. https://clstr.news/cluster/the-ellinikon-redevelopment-advances-with-poseidonos-avenue-undergrounding

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Cite as: Ellinikon urban redevelopment and infrastructure. CLSTR, https://clstr.news/situations/ellinikon-urban-redevelopment-and-infrastructure