New plans have been submitted for a Forth Bridge viewing platform tourist attraction.
The Forth Bridge Experience had been hoped to launch for the 125th anniversary in 2015 but stalled due to lack of funding.
The iconic structure in South Queensferry, near Edinburgh, is tipped to become an 'exciting tourist destination' by project managers at Network Rail Scotland.
Initial plans were approved in 2020 but have been revisited to cut down costs and make the attraction more 'sympathetic' to its environment.
Groups of 12-15 people, wearing safety harnesses, would be accompanied up walkways to two viewing platforms on the south cantilever, or tower, of the 132-year-old railway bridge between Fife and Edinburgh, 110m above the Forth.
Up to three groups an hour would be permitted on the bridge, with each tour expected to last around two-and-a-half hours.
No date has been announced for the start of the tours, but industry sources said it could be by autumn next year, the Scotsman reported.
Updated plans submitted to the City of Edinburgh Council include siting the project's single-storey "reception hub" to the east rather than west of the bridge in Dalmeny on the south side of the Forth, further away from neighbouring homes.
Walkers would use an existing access stair from a new raised terrace, rather than via a ramp around the building and a new gantry.
The centre would include a 56-space car park with four disabled spaces and 15 electric vehicle charging points.
A new path from Dalmeny Station, South Queensferry, would also be constructed.
Network Rail, which owns the bridge, said the attraction would offer "a unique and memorable visit to one of Scotland's most loved and iconic structures".
The walkers' harnesses would be attached to a "continuous running safety line" on the walkways.
Network Rail said the reception building would be "sympathetically positioned in the landscape and offer stunning views of the iconic heritage structure while minimising the impact on the surrounding environment".
It said the updated application had followed a public consultation last autumn to get feedback from residents.
Director of engineering and asset management Alan Ross said: "We have worked very hard over the past year to draw up revised proposals, making them more affordable and more sympathetic to the surrounding environment without compromising the appeal of this project.
"The plans we have submitted to deliver a bridge walk experience will offer the public a unique chance to explore this world-famous structure and create another exciting tourist attraction for Scotland."
