Before 1985, transportation between the island and the mainland was solely dependent on the state-owned Penang Ferry Service that runs between Butterworth and George Town. Toll fees is only paid when heading to the island. There is no charge for leaving the island.
Currently, Penang Bridge handles 65,000 vehicles daily and has a capacity of handling 85,000 vehicles daily. It has been expanded from 4 lanes to 6 lanes to accommodate increasing traffic on the bridge. A proposal for second bridge, the Penang Second Bridge, has been approved by the Malaysian federal government and included as one of the Ninth Malaysia Plan national projects. Construction work of the new Penang Second Bridge began in November 2008, and the target completion date is year 2013.
Recently, Penang Bridge was assign with route number .