Mount Isa City Council are making final preparations for the grand opening ceremony from 6.30pm Friday December 13 for the $7m new Isa St Bridge which replaced the 1932 structure demolished in May.

The new bridge is 900mm higher and significantly wider than the old structure while the traffic lights on the intersection of Fourth Avenue and Isa Street have also been replaced with a roundabout, which will have three refuge pedestrian crossings.

Festivities for the reopening will take place in the George McCoy Park area of Isa Street, as well as on the bridge itself.

The official opening ceremony begins at 6.30pm tonight with music from the Red Desert Blues Band

After a welcome to country and a performance from the Sundowner dancers, Father Mick Lowcock will bless the new bridge before Mayor Joyce McCulloch formally opens the bridge.

The first vehicles to cross the bridge will be a parade of special vintage cars led by Tony Locke in his Dodge Ram.

There will also be an unveiling of a new sculpture at the bridge.

The sculpture will be created using the steel and rubble from the old bridge and one of the posts from the old bridge has been preserved and installed on the new structure.

The post was traditionally used as an unofficial floodwater level indicator that locals used to determine whether the bridge was still safe to cross during flooding events.

The grand reopening event will also include food and market stalls and a jumping castle for the kids.

The new bridge designed to accommodate 1:20 flooding event which equates to 75% or more of historical events where as the old bridge was designed for 1:5 flood events.

The old Isa St bridge was the only access for mine workers to get to work until the Grace St bridge was built in 1967.