New tunnels for Istanbul and Izmir, Turkey
New tunnel connections are to be built in Istanbul and Izmir, along with a new bridge in Izmir. Work is due to start shortly on the Grand Istanbul Tunnel Project. This will be a three level tunnel and should help lower congestion in Istanbul, which suffers amongst the worst traffic jams of any city in the world.
More:World Highways - New tunnels for Istanbul and Izmir, Turkey