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'Landmark' for Forth Replacement Crossing project

5 November 2012 Last updated at 15:13 GMT

The project to build a new bridge over the Firth of Forth has reached a "landmark moment", according to Deputy First Minister Nicola Sturgeon.

The Forth Replacement Crossing is the biggest transport infrastructure project in Scotland for a generation.

Engineers described it as the most critical stage of the building project, as any mistakes could have huge consequences.

Lorna Gordon reports.