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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The family of Christian Pay, who died on Friday after suspected substance abuse at a festival, have paid tribute to the Millom teenager.
The Borders Railway is to be officially opened by the Queen... on the day she becomes Britain's longest serving monarch.
Christian Pay's family say he was "loved by all" and had "the heart of a lion". The 18-year-old died after falling ill at the festival.