Bodø Airport is the busiest airport, and a hub for many smaller airports in Nordland. Harstad/Narvik Airport, Evenes in the north also has non-stop flights to Oslo. The European route E6 runs along the entire length of Nordland. There are many tunnels and bridges; some of the largest are Helgeland Bridge, Gimsøystraumen Bridge, Raftsund Bridge, Skjomen Bridge, Rombak Bridge, Hadsel Bridge, Sortland Bridge, Andøy Bridge, Saltstraumen Bridge, Kjellingstraumen Bridge and Brønnøysund Bridge. Even with improved communications, population numbers in Nordland has actually decreased slightly since 1990, as many young people move to larger cities in Norway. Bodø is the only municipality in the county with a significant growth in population.