Dunwich Convict Causeway, Heritage-listed convict-built causeway in Dunwich, North Stradbroke Island, Australia

Dunwich Convict Causeway is a stone causeway at Junner Street in Dunwich on North Stradbroke Island, built in 1827 by convict labour for the Moreton Bay penal settlement. It formed a landing where large vessels unloaded cargoes that smaller cutters then carried over the sandbar at the Brisbane River mouth to Brisbane. It is listed on the Queensland Heritage Register.

Built in 1827 by convict labour for the Moreton Bay penal settlement, the causeway served as a military and stores depot. Because a sandbar at the Brisbane River mouth blocked large vessels, ships unloaded cargo at Dunwich and smaller cutters carried goods over the bar to Brisbane. After the settlement closed in 1831, it supported a Catholic mission (1843–1847), a quarantine station (1850–1864) and the Dunwich Benevolent Asylum (1864–1947).

The causeway's name comes from its convict builders, and it remains the landing point for barges and water taxis, making Dunwich the gateway to North Stradbroke Island. The wall is a visible record of the penal settlement's logistics: cargo unloaded here was transferred to smaller cutters to cross the Brisbane River sandbar.

The structure sits along Junner Street and is easy to reach on foot while walking through Dunwich toward the waterfront area. Plan a short visit to observe the stonework details, and note that it remains an active part of the modern harbor zone with barge and water taxi services nearby.

The causeway was built in 1827 by convict labour for the Moreton Bay penal settlement, and after the settlement closed in 1831 it went on serving the Catholic mission, the quarantine station and the Dunwich Benevolent Asylum. Today it forms part of the barge and water taxi landing facilities, which made Dunwich the gateway to North Stradbroke Island.