Located within the Gebze district of Kocaeli Province, the D-100 Topçular Interchange is situated on the D-100 State Highway. The project consists of 1,400 meters of main road passage and 3,750 meters of side roads and connection roads.
Construction
The project features a 2x3 lane traffic flow on the main carriageway and includes a 15-span bridge, 2x14 intermediate piers, and a total bridge length of 325 meters. In addition to the vehicular lanes, the structure includes pedestrian walkways measuring 2x(1.5 + 1.0) meters. The total platform width is 2x16 meters = 32 meters.
Upon completion, D-100 highway traffic was redirected via the elevated interchange, while traffic from Darıca–Gebze Road, the north and south side roads, and connection roads is managed through an at-grade intersection beneath the bridge.
Client: Gebze Municipality
Location: Kocaeli / Türkiye
Construction Period: 2014-2015