e-mosty June 2017: Osman Gazi B. US Suspension. Hålogaland B. e-mosty June 2017: Suspension Bridges | Page 29
OSMAN GAZI BRIDGE
ONE YEAR IN OPERATION
Fatih Zeybek, Director of Maintenance
OTOYOL YATIRIM ve İŞLETME A.Ş
Figure 1: Osmangazi Bridge and Approach Viaducts viewed from the North shore of Izmit Bay
1. INTRODUCTION
Osmangazi Bridge is the fourth longest span
suspension bridge in the world with it’s 1550 meter
main span. The bridge and the first phase of the
motorway were opened to traffic on 30 th June, 2016.
The bridge is part of a Build-Operate-Transfer scheme
including the build and operation of the adjacent 420
km motorway stretching from the outskirts of
Istanbul, the largest city of Turkey to Izmir.
Construction of the whole motorway project is
financed by loans obtained by the Concessionaire
(Otoyol Yatırım ve İşletme A.Ş.) from 12 banks.
Otoyol A.Ş. has subcontracted the operation and
maintenance of the bridge and the complete
2/2017
motorway for a period of 22 years to a dedicated
company GIIB (Gebze Izmir İşletme ve Bakım). The
routine maintenance of the bridge will be done by the
Operator GIIB and the heavy repairs by the
Concessionaire based on the recommendations of the
Bridge EPC Contractor. The bridge was built using a
FIDIC Silver Book Engineer, Procure, Construct (EPC)
contract.
The maintenance activities are prepared based on the
Osmangazi Bridge maintenance strategy for the 100
year Design Service Life, which was one of the
essential parameters of the detailed design of bridge.