William Street, Perth

William Street is a suburban distributor and one of two major cross-streets in the Perth central business district, Western Australia. Commencing in western Mount Lawley, its route takes it through the Northbridge café and nightclub district as well as the CBD.

William Street's northern end is at Walcott Street in Mount Lawley and commences as a four-lane single carriageway. It travels southwest along one block, for 130 metres (430 ft), before turning southwards. After 600 metres (2,000 ft) it reaches Vincent Street, and the southern edge of Mount Lawley. The road continues in a south-south-westerly direction, at the eastern edge of Hyde Park and the western edge of Highgate. One block beyond the park, within the suburb of Perth, William Street intersects Bulwer Street, which connects to three parallel arterial roads – Lord Street, Beaufort Street, and Fitzgerald Street – as well as the major north–south road, Charles Street.

William Street realigns itself one block further east through a 220-metre-long (720 ft) reverse curve. At this point, it intersects Brisbane Street. Beyond Brisbane Street, the road reduces from four lanes to two and continues in a straight line for 900 metres (3,000 ft) to Roe Street, and is at the eastern edge of Northbridge from Newcastle Street to that point.

The Horseshoe Bridge takes the road between the Perth railway station and Yagan Square. Beyond the bridge, the road continues in its south-south-westerly direction through the Perth CBD. It intersects all the major east–west routes. At the southern end of the bridge is Wellington Street. This is followed by Murray and Hay streets, which are pedestrian malls to the east; and then St Georges Terrace, which is a through-route for vehicular traffic. One more block takes it to an intersection with Mounts Bay Road, to the west, and The Esplanade to east. After one more block, alongside the Elizabeth Quay bus station and Elizabeth Quay railway station, the road ends at Birdiya Drive. This intersection also connects a Mitchell Freeway exit ramp and Kwinana Freeway southbound entrance ramp, components of the Narrows Interchange.

William Street is serviced by Transperth buses running through Northbridge. Most of these services deviate via Elizabeth Quay bus station before continuing to their destination. Underneath part of William Street is the William Street tunnel, which carries the Mandurah and Yanchep railway lines.

There is an entrance to 108 St Georges Terrace on William Street. Wesley Church is on the corner of William Street and Hay Street. At 427 William Street is the Perth Mosque, the oldest mosque in Perth, which opened in 1906. Australia Place is further down William Street. There is a 24-hour McDonald's, as well as a KFC and Hungry Jack's. Both sides of William Street between Wellington Street and Hay Street have recently been redeveloped, Raine Square on the west and Gordon Stephenson House on the east side of the street.

Although their addresses are on adjacent streets, 108 St Georges Terrace, the Gledden Building, the Palace Hotel and Walsh's Building are all on the corners along William Street. Wentworth Hotel is on the corner with Murray Street

In 2009 the East Perth Redevelopment Authority was involved in redeveloping six properties on the eastern side of William Street, between Roe and Newcastle Streets.