Scottish Borders Council say a second road bridge for Peebles is essential for the town's future prosperity.
The local authority say the the town's only road bridge will be at full capacity by 2020.
Councillors warn that future development will be "held back" if a new bridge isn't built.
Councillor Gordon Edgar, who is in charge of roads and infrastructure, said any future development of Peebles will be held back without the bridge.
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