1915 Çanakkale Bridge (Dardanelles)

1915 Çanakkale Bridge (Dardanelles)

The design of the 4,608-meter-long bridge, consisting of a 2,023-meter main span, 765-meter side spans, and 1,055-meter approach viaducts, was carried out by COWI. A scaled model of the bridge was subjected to wind tunnel testing. Although the wind barrier and vehicle parapet design responsibility belongs to our company, the wind tunnel test results confirmed that no changes were required in the main structural design.

Wind Barrier

The wind barrier is designed to reduce wind effects and consists of five rows of horizontal wind deflectors made of transparent PMMA (polymethyl methacrylate). A maintenance vehicle rail is installed on the underside to protect maintenance operations. The supporting structure is made of S355J2 steel and is hot-dip galvanized.

Vehicle Parapet

The vehicle parapet was developed through extensive simulations and manufactured to meet the H4a-W2 performance level, which exceeds the H4a-W4 specification standard. Compliance with this criterion was verified through crash testing conducted at the CSI test facility in Milan, Italy, and the system was awarded CE certification.

Pedestrian Parapet

The pedestrian parapet is designed, manufactured, and installed based on required deformation criteria under specified static loads, while also taking installation ease into consideration.

Fire Barrier

The fire barrier is designed, manufactured, and installed at bridge expansion joint locations and Tie Down Cable points to meet the required fire resistance and heat transfer values specified in the standards.