Bridge Replacement over the Nattai River, Ferguson Crescent Mittagong

Project typeBridge Replacement and associated Pavement Construction
Project schedulePhysical Construction June 2025 – December 2025

Project Overview

On 31 January 2023, Council entered into a funding deed agreement and received a $2.899m grant as part of the New South Wales Government’s, Round 2 “Fixing Country Bridges - Grant Funding Program”, designated for the replacement of the Nattai Creek Bridge located on Ferguson Crescent in Mittagong.

The existing bridge is a heritage listed item (item no. I1885) of local heritage significance. This bridge was built in the 1898, in excess of 125 years old which is more than the usual useful life of a bridge of this kind.

Project Scope Preliminaries

A heritage consultant was engaged to prepare a Conservation Management Strategy (CMS) for the bridge – which helped identify the significance of the various components of the bridge and informed a subsequent Statement of Heritage Impact (SOHI) that was required to complete the final design.
The bridge design consultant provided bridge replacement options in discussion with the heritage consultant (to AS5100 – Australian Standard for Bridge Design and SM1600 standards).
An Environmental Assessment was undertaken to document and assess environmental consideration and approval pathways.

Project Scope

Physical construction works for this project are due to commence mid-to-late June 2025 and are scheduled for completion by the end of the calendar year (weather permitting).

The works include:

InQuik bridge installation
Road approach/pavement construction
Retaining wall, footpath, and safety fence, installations
Diversion of traffic from the old bridge structure to the new bridge structure
Re-vegetation

Community Impacts

Ferguson Crescent (between the Old Hume Highway and Bong Bong Road) will be closed for the duration of the works. This closure will enable the construction of the new structure and for the safety of both the workers and the public.

Access will be facilitated for local residents and businesses from the Bong Bong Road intersection end of the works. Road users and pedestrians are to be aware of heavy machinery and workers in the area, and exercise caution when travelling through the work zone.