Within the last month the review of environmental factors, statement heritage impact and Aboriginal due diligence has been completed by OzArk, council documents show.

Once that has been completed a geotechnical investigation of the proposed site - alongside the historic Brig O'Johnston Bridge on Limeburners Creek Road - will be done and the community will receive an official update about the project's progress.

The $14.3 million is being funded through $5.5 million from the NSW Government Fixing Country Roads Program and $8.8 million from the Federal Government.

The bridge length will be about 125 metres and it will have two lanes - one in each direction. It will be 8.8 metres wide and feature a pedestrian walkway.

Work on the bridge approaches will also be factored in to the project.

"This proposal will be an improved access point into Clarence Town for all residents while minimised the impact on the heritage listed bridge," the council report said.

"The proposed new bridge will provide for enhanced capacity for freight to not only the Clarence Town area but the Dungog Shire as a whole.

"Whilst the bridge does not lead to any particular single industry, there are a number of commodity chains that will benefit from the new structure not having load and width restrictions.

"The construction of a new bridge and the subsequent removal of traffic and width restrictions will result in additional freight movements into this area."