Soft Soil Treatment Works on the Nelligen Bridge Replacement

Operational Site Management | Environmental Advisor

Roads and Maritime Services are planning for a new bridge over the Clyde River at Nelligen. The new bridge will be located upstream of the existing bridge and make the trip through Nelligen on the Kings Highway safer and more reliable. Early work started in 2018.


Eurobodalla Shire Council was contracted by Roads and Maritime Services (RMS) to complete early work on the Nelligen Bridge replacement project. This included soft soil treatment, the installation of a sediment pond for future water management, and the addition of site access tracks.

Umwelt were engaged by Eurobodalla Shire Council to provide advice on maintaining compliance with environmental conditions including EPL licence conditions, Construction Environmental Management Plan conditions and RMS specification guide requirements.

The site is located within a very sensitive region as it was situated between the Clyde River NSW Marine Reserve and a SEPP14 Coastal Wetland, leaving no room for error in environmental management.


One of our Senior Environmental Scientists visited site once a week to conduct monitoring inspections, review environmental responsibilities, meet with visiting stakeholders and liaise directly with the RMS site representative and environmental representatives. Advice was provided on a weekly basis and as required on best practice management of the site, including maintenance on erosion and sediment control structures, weed management, flora and fauna management, water quality testing and monitoring of any potential acid sulphate soils.

Our representative was also available throughout the week to manage and provide advice on any environmental incidents, including providing timely advice on adverse weather events.

This role included extensive consultation with the RMS and the EPA regarding the sensitivity of the location of the site in regards to environmental management.


Through conducting weekly site inspections, providing advice on maintaining compliance with environmental conditions, and having positive working relationships with site supervisors, workers, RMS and the EPA, site compliance was maintained throughout the project. Work was completed in March 2019, with positive environmental outcomes.