Spencer Gulf crossing capacity

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Spencer Gulf crossing capacity

Connectivity in Port Augusta
Early-stage proposal (Stage 1)
Port Augusta, SA
Smaller cities and regional centres
National Connectivity
Problem/Opportunity timeframe
Near term (0-5 years)
Proposed By
SA Government
Date added to the IPL
14 February 2019


The Joy Baluch AM Bridge crosses the northern end of the Spencer Gulf at Port Augusta and forms part of the National Land Transport Network. Constraints on 
the existing crossing include mass limits for commercial vehicles, poor resilience to incidents and limited throughput for vehicles. The current configuration of the bridge is one lane each way, with a speed limit of 40 km/h.

Over 17,000 vehicles use the bridge each day, including national highway traffic from south-eastern Australia to the Northern Territory and Western Australia. It also provides important heavy vehicle access to the Eyre Peninsula and western and far-north mining provinces. While Yorkeys Crossing provides an alternative route to the north, it is unsealed and can be closed in wet weather.

Addressing these deficiencies could allow High Productivity Vehicles to cross the Spencer Gulf and improve freight efficiency. It could also improve safety for pedestrians, cyclists and passenger vehicles, as well as improve traffic flows.


The proposal involves improving the crossing capacity of the Spencer Gulf at Port Augusta. This could be achieved by developing alternative routes, upgrading the existing Joy Baluch AM Bridge or by constructing a new crossing.

Next steps

Proponent to develop potential investment options (Stage 2 of Infrastructure Australia’s Assessment Framework).