Transport Infrastructure Projects
Istanbul, Şile, Ağva and Kandıra Road
Istanbul, Şile, Ağva and Kandıra Road
A high quality route connecting Istanbul with Black Sea coastal settlements
Istanbul, Şile, Ağva and Kandıra Route, Türkiye
Phase 1 construction: 2013 to 2022; Phase 2: 2022 to Present
Istanbul, Şile, Ağva and Kandıra Road
General Information
Location
Istanbul, Şile, Ağva and Kandıra Route, Türkiye
Employer
Karayolları Genel Müdürlüğü
Project Scale
82.45 km to BY-BSK divided road hot mix asphalt standards, 2x2 lanes
Project Duration
Phase 1 construction: 2013 – 2022Phase 2 construction: 2022 – Ongoing
Principal Engineering Structures
9 twin-tube tunnels14 viaducts6 bridgesAccess roads and modern junction layouts
Function
Upgrading the D-020 east west corridor linking Istanbul and Kocaeli provides an important, less seismically risky alternative to the D-100 State Road connecting Anatolia to Istanbul.
Şile Ağva Kandıra Road, a key part of the D-020 east west corridor, links Istanbul and Kocaeli and provides an important, less seismically risky alternative to the D-100 State Road from Anatolia to Istanbul.
Architectural and Engineering Details
Numerous major and minor structures were designed and implemented with modern engineering in northern Istanbul's difficult terrain. Tunnels and viaducts minimized impacts along the coastal Şile Ağva section. Modern junctions targeted continuous transport, addressing the region's traffic problems, particularly in summer.
Technologies and Innovations Used
National and international standards governed roads and major structures, including tunnels, viaducts and bridges. Modern interchanges delivered a motorway standard state road on Istanbul's northern axis.
Special Solutions
Environmentally sensitive road planning accounted for route requirements, geographical difficulties, tourism and dense industrial areas. Modern infrastructure supports safety and traffic flow throughout.
Project Stages
Construction Stages
01
Phase 1: Istanbul Şile Ağva section
02
Phase 2: Şile Ağva Kandıra section
Solutions
Modern solutions, including grade separated intelligent interchanges, tunnels and viaducts, account for traffic, geography and port and industry logistics, ensuring uninterrupted transport through a divided road network.
Sustainability
Economic and Social Impact
Supporting tourism, the project also created a safe, fast logistics corridor for industry and ports. Reduced Istanbul travel time accelerated the regional economy.
Sustainability and Environmental Sensitivity
Tunnels reduced impacts on nature and the environment, with landscaping and environmental improvements along the road. A shorter, continuous route lowered fuel consumption and carbon emissions.
Completion will improve the road's physical and geometric standards, ensuring safe movement of traffic increasing with strong tourism potential, rapidly expanding industry and linked ports in Ağva Kandıra Kaynarca. The road also matters for integration of the Black Sea Coastal Road with the Third Bosphorus Bridge.
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