# Kocaeli municipal infrastructure upgrades

> Live situation record from CLSTR: https://clstr.news/situations/kocaeli-municipal-infrastructure-upgrades
> Updated: 2026-07-29T17:29:03.000Z. Sources: 19. Developments: 3.

In early July, Kocaeli's Metropolitan Municipality completed a heavy‑vehicle corridor in İzmit, reinforcing Nizamoğlu İsmail Caddesi and repainting nine kilometres of markings. Later that month the city launched a summer maintenance programme, cleaning 269 signalised intersections to keep traffic lights functional as vehicle numbers rose.

On 25 July the General Directorate of Highways announced temporary closures on the TEM motorway (km 0‑13), the North Marmara Motorway at Akyazı and parts of the İzmir Ring Road for surface‑renewal and bridge‑repair work. Kocaeli’s signal‑maintenance continued alongside these national works, and Bursa’s public‑transport subsidiary BURULAŞ overhauled dozens of bus engines, gearboxes and brakes, saving the city more than 24 million TL in external procurement costs.

From 31 July until 10 August, Kocaeli Büyükşehir Belediyesi closed both directions of the Santral Ramp in İzmit to reconstruct the upper structure, and replaced ten defective LED fixtures on three city overpasses. In Sakarya, Mayor Yusuf Alemdar inspected progress on the new 4th Cadde corridor – a 1.2‑km, 20‑metre‑wide double‑carriageway with a 40‑metre underground passage expected to cut travel time by about ten minutes. Bursa Büyükşehir Belediyesi completed a widening of Kaldırım Caddesi in the Kurşunlu neighbourhood of Gemlik, expanding the road from 8 to 15 metres and applying a double‑layer pavement.

These coordinated municipal projects across Kocaeli, Sakarya and Bursa illustrate a broader regional push to modernise road capacity, ease congestion, and enhance safety during the summer peak season.

## Timeline

### 2026-07-29: Turkish municipalities roll out major road and infrastructure upgrades in Kocaeli, Sakarya and Bursa

Kocaeli closed the Santral Ramp for reconstruction and upgraded over‑pass lighting, Sakarya built a 1.2 km double‑carriageway 4th Cadde, and Bursa widened Kaldırım Caddesi to 15 m, all to improve local traffic.

6 sources. https://clstr.news/cluster/kocaeli-metropolitan-municipality-upgrades-lighting-on-three-city-overpasses

### 2026-07-25: Turkey carries out wide‑scale road closures and transport‑infrastructure upgrades

Turkey reports major highway closures for repairs, Kocaeli cleans 269 traffic signals, and Bursa’s bus fleet saves over 24 million TL via in‑house maintenance.

13 sources. https://clstr.news/cluster/kocaeli-municipality-cleans-269-traffic-signal-intersections

### 2026-07-04: Kocaeli Municipality completes major road upgrades in İzmit

Kocaeli Municipality opened a reinforced heavy‑vehicle route and repainted 9 km of road lines in İzmit, boosting traffic safety and easing congestion.

4 sources. https://clstr.news/cluster/kocaeli-municipality-completes-major-road-upgrades-in-izmit

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Cite as: Kocaeli municipal infrastructure upgrades. CLSTR, https://clstr.news/situations/kocaeli-municipal-infrastructure-upgrades