The Narrows Bridge 🩷 The Narrows Bridge in Perth is a crucial 3-part transport link spanning the Swan River, connecting the Mitchell and Kwinana Freeways between Perth City and South Perth. Opened in 1959 as the world's largest precast prestressed concrete bridge, it now includes two road bridges (1959, 2001) and a central railway bridge (2007) for the Mandurah line.Key DetailsLocation: Connects Mounts Bay Road (Perth) and Mill Point Road (South Perth).Structures: Originally a single 335-meter,