435 mm). The trams played a pivotal role in the growth of the city in the 20th century.
There are seven tramway lines supplemented by five trolleybus lines and numerous bus routes. The main railroad station in Sarajevo is located in the north-central area of the city. From there, the tracks head west before branching off in different directions, including to industrial zones in the city. Sarajevo is currently undergoing a major infrastructure renewal; many highways and streets are being repaved, the tram system is undergoing modernization, and new bridges and roads are under construction.
Future metro plans
Sarajevo-based architect, Muzafer Osmanagić, in order to solve traffic congestion in Bosnia's capital, has proposed a study called "Eco Energy 2010-2015", idealizing a subway system underneath the bed of the river Miljacka. The first line of Metro Sarajevo should connect Basčarsija with Otoka. This line should cost some 150 million KM and be financed by the European Bank for Reconstruction and Development.
Airport
Sarajevo International Airport (IATA: SJJ), also called Butmir, is located just a few kilometers southwest of the city and was voted Best European Airport With Under 1,000,000 Passengers at the 15th Annual ACI-Europe in Munich in 2005. During the war the airport was used for UN flights and humanitarian relief. Since the Dayton Accord in 1996, the airport has welcomed a thriving commercial flight business.
In 2011 Sarajevo International Airport had 599,996 passengers which is more than all of the airports in Bosnia-Herzegovina had together and 6,5% more than in 2010. The growth rate in 2012 is expected to be around 10%.
Plans for extension of the passenger terminal, together with upgrading and expanding the taxiway and apron, are planned to start in Fall 2012. The existing terminal will be expanded by approximately 7,000 square metres. The upgraded airport will also be directly linked to
