The old town jetty at Port Lincoln, South Australia: a view taken from the sea at the far end of the jetty. This was the first jetty built at Port Lincoln and was erected in 1857. It was initially 159 metres long but was extended twice to a length of 222 metres giving a depth of 3.6 metres at low water. Subsequent changes in length occurred before the jetty was closed for commercial purposes in 1936. It is a popular fishing spot.

Another jetty at Kirton Point had been built in 1906 where there was deep water close inshore; the railway serviced this jetty. For many years this was the main commercial jetty, until in 1920 Brennen's jetty was built between the town jetty and Kirton Point.

Brennen's jetty was opened in 1923. This has been continually strengthened over the years and in 1958 bulk grain silos were built nearby, and the conveyor belts for bulk handling were added. Brennen's jetty now has 10 berths and in 2005/06 Port Lincoln handled 1.777 million tonnes of cargo. The modern port is managed by Flinders Ports.