Not really in Edinburgh, but South Queensferry, the Forth Road Bridge is a suspension bridge in east central Scotland. The bridge, opened in 1964, spans the Firth of Forth, connecting West Lothian, at South Queensferry, to Fife, at North Queensferry.

Forth Road Bridge

Design: Suspension bridge
Total length: 2,512 metres
Width: 33 m Dual two-lane carriageway, two footpaths
Height: 156 metres
Longest span: 1,006 metres
Clearance below: 44.3m

Forth Road Bridge

Wikipedia Link
forthroadbridge.org