2. The Whitestone Bridge Was Converted From a Parkway to a Expressway
In 1959, the Whitestone Bridge was officially designated an interstate highway (Interstate 678). In order to be included in the Interstate system, commercial trucks and buses had to be allowed onto the road. The Bronx and Queens approaches were consequently reconstructed from parkway to expressway standards. Prior to this change, trucks were only able to enter the bridge at ramps near the Bronx and Queens approaches.