# Ilissos River infrastructure and bridge projects > Live situation record from CLSTR: https://clstr.news/situations/ilissos-river-infrastructure-and-bridge-projects > Updated: 2026-08-11T08:20:47.000Z. Sources: 11. Developments: 2. Infrastructure projects involving the Ilissos River in the Kallithea and Moschato-Taavrou areas have reached completion, resulting in the reopening of major roadways. Initially, the Municipality of Kallithea announced that a section of Old Poseidonos Avenue, extending from Thiseos Avenue to Kapodistriou Street, would reopen following the construction of a new road bridge and a parallel bridge for public utility networks. These works were intended to improve safety, accessibility, and flood protection through better water runoff management. Subsequent reports confirmed the opening of a new road bridge on Ethnarhou Makariou Avenue. This project, which restores two-way traffic with two lanes in each direction, faced a two-and-a-half-month delay due to technical difficulties and licensing requirements. The project is part of a €7.9 million initiative managed by the Attica Region to manage the Ilissos River bed, which includes interventions on three bridges and the addition of new pedestrian walkways to enhance regional drainage capacity. ## Timeline ### 2026-08-11: New Ilissos River bridge opens on Ethnarhou Makariou Avenue A new road bridge over the Ilissos River on Ethnarhou Makariou Avenue has opened, restoring traffic flow and improving flood protection for the Kallithea and Moschato regions. 3 sources. https://clstr.news/cluster/new-ilissos-river-bridge-opens-on-ethnarhou-makariou-avenue ### 2026-08-09: Kallithea: Old Poseidonos Avenue to reopen after bridge construction Old Poseidonos Avenue in Kallithea will reopen on August 10 following the completion of new bridges over the Ilissos River, aimed at improving traffic and providing flood protection. 8 sources. https://clstr.news/cluster/kallithea-old-poseidonos-avenue-to-reopen-after-bridge-construction --- Cite as: Ilissos River infrastructure and bridge projects. CLSTR, https://clstr.news/situations/ilissos-river-infrastructure-and-bridge-projects