What is the vertical clearance on the centerline of the First Avenue South Bridge?

The vertical clearance on the centerline of the First Avenue South Bridge is 39 feet, which is consistent with the design and specifications of the bridge. This measurement is crucial for ensuring the safe passage of marine traffic beneath the bridge while maintaining appropriate clearance for vehicles above. Vertical clearances are determined by a combination of navigational requirements and safety standards, which are taken into account during the engineering and planning phases of bridge construction.

Understanding this specific height is vital for planners and schedulers who are involved in construction, maintenance, or navigation planning in areas affected by the bridge. Accurate knowledge of vertical clearances helps prevent accidents and ensures smooth transit for both vehicular and marine traffic. Thus, the correct answer of 39 feet reflects the established design parameters for this particular structure.