A 200 tonne crane was used on Thursday to undertake the next section of work on the Parma Road bridge at Falls Creek.
The crane lowered the 16.2 tonne concrete planks into place on the southern side of the bridge.
Teams from Talis Civil guided the six concrete planks into place.
The prefabricated concrete planks were constructed in Tamworth, before being transported south on a number of semi-trailers over the past few days.
The first planks were placed on new 18 tonne abutments and upgraded pier caps which were placed over the existing concrete piers.
Once the southern concrete crossing is complete it will be opened to traffic and work will start on the demolition of the remaining wooden structure.
Similar work on the buttresses and existing piers will be carried out before the remaining nine concrete planks can be put in place and the new two lane bridge can be fully opened to traffic.