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Great set of photos HRZMSH! What is the green apparatus(es) in the first three photos? Appears it is / they are meant to travel the main cables. Will they wrap the main cable, aid in the placement of cable bands and suspension cables? Maybe they are lifting gantries for the deck sections to be placed in the center of the span? I would think that the blue lifting gantries used during the stayed deck sections would continue on lifting the suspension sections.

Also, one of the last photos shows 9 sockets atop the tower. Are these the cables used in the tie-back process where the towers are pulled back towards shore out of plumb and eventually pulled back into plumb with each added suspension section?
 

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Great set of photos HRZMSH! What is the green apparatus(es) in the first three photos? Appears it is / they are meant to travel the main cables. Will they wrap the main cable, aid in the placement of cable bands and suspension cables? Maybe they are lifting gantries for the deck sections to be placed in the center of the span? I would think that the blue lifting gantries used during the stayed deck sections would continue on lifting the suspension sections.

Also, one of the last photos shows 9 sockets atop the tower. Are these the cables used in the tie-back process where the towers are pulled back towards shore out of plumb and eventually pulled back into plumb with each added suspension section?
answer to your first question, source:http://www.3kopru.com/eng/newsfromnmmp/NEW-GIANT-CRANE-ON-THE-BRIDGE/341
New giant cranes are now being used in the 3rd Bosporus Bridge Project by ICA. There has been a change in the method of steel deck placement procedure. Now, 3.000-ton carrying capacity sliding cranes consisting of 2 parts will be used for lifting the steel decks. The remaining 17 steel decks will be lifted with sliding cranes.

3. 3rd Bridge Field Supervisor said, “Lifting Gantry consists of 2 parts to be installed on the main cable; each part weighs 190 tons. Previously "Derrick Crane” was used. It was on the steel decks and lifted the next deck by anchoring itself on the previous deck. We will be using a new system here. Montage of the sliding crane has been made on the D14 steel deck. At this stage, the new giant crane (lifting gantry) will be lifted sideways to pass between the main cable and rotated 90 degrees with the help of a rotating stand on the main cable. All of these processes, as well as steel deck lifting works will be done simultaneously in European and Asian sides.”
answer to your second question:
There are 113 wire strands on the main span, and 122 on the side spans. So I think those sockets are some kind of a achorage point on the top of the towers for the remaining 9 strands from the side spans

You could also have a look at the following link: http://www.3kopru.com/eng/newsfromnmmp/MAIN-CABLE-COMPACTION-IS-COMPLETED/335
 

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Istanbul’s 3rd bridge over Bosporus to become operational by May

December 23, 2015





The Yavuz Sultan Selim Bridge, the third bridge over the Bosporus in Istanbul, will begin service starting in April or May of 2016, said the Minister of Transport, Maritime and Communication Binali Yıldırım on Tuesday.

Construction of the bridge is about 88 percent completed, Yıldırım said, who further added that the bridge will ease Istanbul's traffic, which has seen an enormous jump in the number of vehicles, especially in the last years.

Yıldırım said that in the last 12 years, the number of vehicles has increased from 8.5 million to 20 million, pointing out the effect of this on road accidents. He said, within this period, the number of traffic accidents has increased threefold, whereas the annual road fatality rate has decreased by 63 percent thanks to a more successful standardization of the roads.

Thousands of employees and engineers work ceaselessly 24 hours a day in the construction of the Yavuz Sultan Selim Bridge. The total length of the bridge is 2,164 meters.

The bridge, which has a length of 1,408 meters over water, has eight lanes of highway and two lanes of railway. It will be the longest suspension bridge in the world that features a rail system. The height of the tower in Garipçe village on the European side is 322 meters and the other tower in Poyrazköy district on the Asian side is 318 meters high. The bridge will be the highest in the world in terms of the height of its abutments.

The rail system that crosses the bridge will run from Edirne to İzmit, will be integrated into the Marmaray and Istanbul Metro and will connect Istanbul Atatürk International Airport, Sabiha Gökçen International Airport and the third airport.
http://www.dailysabah.com/money/2015/12/23/istanbuls-3rd-bridge-over-bosporus-to-become-operational-by-may
 

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The Yavuz Sultan Selim Bridge, the third bridge over the Bosporus in Istanbul, will begin service starting in April or May of 2016, said the Minister of Transport, Maritime and Communication Binali Yıldırım on Tuesday.

Construction of the bridge is about 88 percent completed, Yıldırım said, who further added that the bridge will ease Istanbul's traffic
No it won't, there is no way the bridge and motorway approaches will be finished by May. Too big a job.
 

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Looks beautiful even now -I can only imagine what a stunner it will be once it's fully in operation.

No it won't, there is no way the bridge and motorway approaches will be finished by May. Too big a job.
So when do you think it will be completed?
 
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