Construction started in 2009 and currently the progress is 60-70% (Source)
Tunnel length is 2.2km, connecting Tehran Bazzar to North Tehran (E. Ali Hwy).
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Thanks for clarifying.hno:This last photo is certainly not from Amir Kabir Tunnel in Tehran, but from the crossover cavern of Gotthard Rail Tunnel in Switzerland. See the logo of the contractor on the left and compare with this one: http://www.tat-ti.ch