Up to 12,500 people will be permitted to walk onto one of the carriageways of the 1.6 mile-long crossing – Scotland’s largest man-made structure – to see a procession of bands, floats and vintage cars from the 1960s on the opposite carriageway.
The event, on Sunday 7 September, 2014, could also include the first-ever parachute jump onto the bridge, being planned by the Golden Lions Scottish Infantry Parachute Display Team.
It will be accompanied by a flotilla of boats in the Forth and an air display overhead, with the bridge being closed to traffic for several hours during the morning event.
The celebrations form part of a ten-day Forth Bridges Festival, culminating in a fireworks display on the bridge and nearby barges on 13 September.