Podgorica's location in central Montenegro makes it a natural hub for rail and road transport. Roads in Montenegro (especially those connecting Podgorica to northern Montenegro and Serbia) are usually inferior to modern European roads. Both major Montenegrin motorway projects, Bar-Boljare motorway and Nudo–Božaj motorway, will pass near Podgorica. The newly built Sozina tunnel (4.2 km) shortened the journey from Podgorica to Bar (Montenegro's main seaport) to under 30 minutes. Also, a new road bypass has been constructed in 2011, to remove transport routes from north to south of the country, out of the city center. A south-western bypass has also been planned , with the same goal of moving heavy transport out of the city core. Podgorica is also characteristic of its extensive network of multi-lane boulevards which make inner-city transport quick and effective. Traffic over the Morača River also goes fluently since river banks are very well connected with 6 vehicular and 3 pedestrian bridges.