Coordinates: 51°30′16″N 0°21′20″W / 51.5044182°N 0.3554333°W
View of canal and road bridges crossing the railway line looking east
Three Bridges is a scheduled monument near Hanwell in west London, United Kingdom, designed by Isambard Kingdom Brunel. Work began in 1856, and was completed in 1859.
The three bridges are a clever arrangement allowing the routes of the Grand Junction Canal, Great Western and Brentford Railway, and Windmill Lane to cross each other - road above canal above railway.
The project was Brunel's last before he died on 15 September 1859, just two months after its completion.