Repairs to Cilwrgan bridge, Aberbechan, start in July
Work to repair a Grade II-listed bridge, which closed six months ago during a cold snap, is expected to start next month.
Cilgwrgan Bridge in Aberbechan, near Newtown, Powys, was shut on 2 January after cracks were spotted in stonework.
The work, which is estimated to cost £500,000, will take several months to complete.
Powys council said in January that the weather made the bridge on the B4389 dangerous.
Motorists had used the B road to escape congestion in Newtown, which has caused problems in the town for months.
The local authority said it had obtained listed building consent from the historic monuments agency Cadw to repair the bridge.
Councillor Geraint Hopkins, cabinet member for environment and regulation, said: "The decision in closing a bridge is never taken lightly because of the impact it has on local residents and businesses but in this case the weather had left it in a dangerous condition so we had no option but to close it on safety reasons.
"We hope to complete the work by early 2012 but this is dependent on the weather during the autumn and winter months."