Çayırhan Bridge

Çayırhan Bridge, which was designed within the scope of the Work “Çayırhan Bridge and Connection Tunnel Construction” tendered by the 4th Regional Directorate of Highways, will be located in Ankara Nallıhan Bird Paradise on the Beypazarı-Nallıhan Provincial Road.  The project has been approved by the General Directorate of Highways and bridge construction works are ongoing.

• Within the scope of the project, design and construction documentation have been prepared for inclined-footed cantilever type bridge with a maximum span of 145 m, total length of 270 m and with post-tensioned reinforced concrete superstructure.
• The frame system formed from inclined legs built on a foundation on both sides of the span and the deck element connecting them constitute the basis of inclined-footed cantilever type bridge.
• Following the completion of triangular edge frame construction with the cast-in-situ scaffolding formwork method, the half span cantilever deck can be completed as sliced console by advancing the form traveller. Thanks to the weight and geometry created by edge frames, stability will be ensured.
• In order to reduce the longitudinal horizontal loads due to seismic loads and temperature change effects, the bridge has “sliding bearings” on side supports and “friction pendulum bearings” on the middle supports.