At busy intersections, they also act as a pedestrian underpass or overpass. Access to the central island requires an underpass or overpass for safety. A tunnel and pedestrian underpass beneath Beach Blvd. The project involves the creation of a dual carriageway underpass, beneath an improved roundabout. A new footbridge was also provided, replacing the previous underpass. A major bus terminus is located under the Kwai Chung Road underpass. Access between the platforms is via steps and a pedestrian underpass. The underpass and overbridge date from 1855. Two of the entrances are connected with an existing pedestrian underpass. The project was built in conjunction with the Anzac Highway Underpass. In August, the underpass at the Dewa Ruci intersection was opened. These are the Ferntree Gully Road underpass and the Wellington Road underpass. A second tunnel, the Battery Park Underpass, started construction in 1949. The road reduces from three lanes to two in the underpass. The historic Terminal Annex building is on the opposite side of the Chavez Avenue underpass.