Editing Sydney Harbour Bridge (section)

===Road===
{{main|Bradfield Highway, Sydney}}
[[File:Sydney CBD from the top (gun) deck of the south east pylon of the Sydney Harbour Bridge.jpg|thumb|The roadway of the bridge, from the southern pylon]]
From the Sydney CBD side, motor vehicle access to the bridge is via [[Grosvenor Street]], [[Clarence Street, Sydney|Clarence Street]], [[Kent Street, Sydney|Kent Street]], the [[Cahill Expressway]], or the [[Western Distributor, Sydney|Western Distributor]]. Drivers on the northern side will find themselves on the [[Warringah Freeway]], though it is easy to turn off the freeway to drive westwards into [[North Sydney, New South Wales|North Sydney]] or eastwards to [[Neutral Bay]] and beyond upon arrival on the northern side.{{citation needed|date = March 2014}}

The bridge originally only had four wider traffic lanes occupying the central space which now has six, as photos taken soon after the opening clearly show. In 1958 tram services across the bridge were withdrawn and the tracks replaced by two extra road lanes; these lanes are now the leftmost southbound lanes on the bridge and are separated from the other six road lanes by a [[median strip]]. Lanes 7 and 8 now connect the bridge to the elevated Cahill Expressway that carries traffic to the [[Eastern Distributor]].

In 1988, work began to build a tunnel to complement the bridge. It was determined that the bridge could no longer support the increased traffic flow of the 1980s. The [[Sydney Harbour Tunnel]] was completed in August 1992 and carries only motor vehicles.

The Bradfield Highway is designated as a [[Stock route|Travelling Stock Route]]<ref>{{cite web|url=http://www.wilderness.org.au/articles/nsw-drovers-rally-to-save-historic-travelling|publisher=[[The Wilderness Society (Australia)|The Wilderness Society]]|title=NSW drovers rally to save historic travelling stock routes|access-date=5 July 2009|date=27 August 2008|url-status=dead|archive-url=https://web.archive.org/web/20120222021821/http://www.wilderness.org.au/campaigns/wildcountry/nsw-drovers-rally-to-save-historic-travelling|archive-date=22 February 2012}}</ref> which means that it is permissible to herd livestock across the bridge, but only between midnight and dawn, and after giving notice of intention to do so. In practice, the last time livestock crossed the bridge was in 1999 for the Gelbvieh Cattle Congress.<ref>{{cite web|last=Ellicott|first=John|date=3 March 2017|title=Can't be done for Herd of Hope? Here's proof it can|url=http://www.theland.com.au/story/4503950/cant-be-done-for-herd-of-hope-heres-proof-it-can/|access-date=27 May 2021|website=[[The Land (newspaper)|The Land]]|language=en-AU|archive-date=24 September 2021|archive-url=https://web.archive.org/web/20210924213333/https://www.theland.com.au/story/4503950/cant-be-done-for-herd-of-hope-heres-proof-it-can/|url-status=live}}</ref>