Construction Works for Superstructure, Bridges, and Related Structures on the D-100 State Road between km: 59+450 and km: 69+300 (Şirinyalı–Tavşancıl Section).
GEBZE–İZMİT HIGHWAY:
ŞİRİNYALI–TAVŞANCIL INTERCHANGE SECTION
ŞİRİNYALI–TAVŞANCIL INTERCHANGE SECTION
Construction
Şirinyalı-Tavşancıl Interchange Section
Construction Methodology
As part of this project, the existing 10 km-long 2-lane (1 lane per direction) road was upgraded to a 4-lane (2 lanes per direction) divided highway. In addition to the superstructure works, five grade-separated interchanges were constructed.
Due to the narrow corridor in the Hereke section—situated between the elevated TEM Motorway and the lower TCDD Ankara–Istanbul main railway line—the standard dual carriageway cross-section could not be applied. Therefore, for the first time in Türkiye, a 7.50-meter-wide cantilevered road design was implemented.
Client: General Directorate of Highways, 1st Regional Directorate
Location: İzmit / Türkiye
Construction Period: 2006 – 2010
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