The new bridge in Glenisland on the R312 Castlebar-Belmullet road is due to open tomorrow.
Based partly in the Castlebar Municipal District, the R312 had been prioritized for some years by the district for upgrade and the bridge was part of those works.
Castlebar based Fianna Fail councillor Martin McLoughlin says there has been years of campaigning to get this bridge repaired and to remove the dangerous bends.
The total cost of the project is around €2 million euro.
Cllr. McLoughlin has been telling Midwest News that there are plans to carry out further upgrade work along the R312 in the years ahead.