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Heavy Vehicles

Detour for Oversize Vehicles

Oversize vehicles greater than 3.4m wide are currently not permitted to travel in either direction on the South Eastern Freeway between the Glen Osmond Tollgate and the Stirling Interchange without a  permit.

Where travel is not permitted, detour will be via Old Princes Highway, Karoonda Highway, Burdett Road, Bowhill Road (Council  road), Morell Road Bowhill (Council road), Hunter Road, Stott Highway Swan Reach, Hunter Road to Sturt Highway Blanchetown (and vice versa). This detour is required as oversize vehicles greater than 3.6m wide are currently not permitted to travel in either direction on the North South Freight Route between Murray Bridge and Sedan.

For information regarding permits and potential changes to requirements please refer to the NHVR website or email

Please click here for the detour map.

Important information for heavy vehicles  

Speeds for heavy vehicles on the South Eastern Freeway in the work area will be restricted to 40kph for the duration of the works.

The arrester bed just east of the Toll Gate will be unavailable for a period of approximately two weeks during working hours. Confirmed dates and details will be provided on the project website and social media two weeks prior.

During this time, a Truck Mounted Attenuator (TMA) will be on-site for use by any errant heavy vehicle. A Truck Mounted Attenuator or impact attenuator, also known as a crash attenuator, is a device intended to reduce the damage to structures, vehicles, and motorists resulting from an errant motor vehicle collision. TMAs are designed to absorb the colliding vehicle's kinetic energy. An image of a TMA is below.