It can be moderately busy during peak times with local traffic, but less so for tourists.
As an active public thoroughfare, the Central Bergen Bridge can experience moderate levels of traffic, both vehicular and pedestrian, particularly during typical commuting hours on weekdays. It is an integral part of the local infrastructure, so locals will be using it to move around the city. However, it generally does not get 'crowded' in the way a major tourist attraction might. For tourists, it's usually easy to find space to walk, enjoy the views, and take pictures without feeling overwhelmed by crowds, especially during off-peak times or weekends.