West Gate Bridge, Cable-stayed road bridge in Melbourne, Australia.

The West Gate Bridge is a steel box-girder cable-stayed bridge over the Yarra River in Melbourne, with ten lanes across two carriageways. Its 848-metre river span includes a 336-metre main span, and the deck stands 58 metres above the water. The central steel pylon rises above the deck, with diagonal cables extending down to the roadway.

Construction began in 1968 and finished in 1978, after a collapse in 1970 halted the project and led to new safety standards in bridge engineering. The disaster brought changes in technical regulations that were later adopted across Australia.

The name refers to its position as the western gateway from the city center, and commuters use it every day to reach the industrial suburbs. A memorial park at the bridge's base invites visitors to pause and honor the workers who died during construction, making it a place where memory and daily routine meet.

Pedestrians and cyclists are barred from the roadway; the Westgate Punt foot ferry crosses the Yarra directly beneath the bridge, linking a jetty near Westgate Park with one beside Scienceworks Museum. It runs on demand during weekday morning and evening peaks and from 10:00 am to 5:00 pm on weekends and public holidays. Exposed approaches mean high winds can close the crossing to motorbikes and high-sided vehicles.

The 112-metre steel span between piers 10 and 11 fell 50 metres on 15 October 1970, killing 35 workers; the impact shook buildings hundreds of metres away. The bridge was completed in 1978 at a cost of 202 million AUD, and tolls were abolished in 1985 under John Cain's government. A memorial near the bridge commemorates the victims.