| Coordinates: | 50.7293°N -1.9133°W |
| Material: | Brick |
| Number Spans: | 10 |
| Below: | Gordon Road, Surrey Road |
| Built: | 1888 (old bridge) 1893 (new bridge) |
| Closed: | 1965 (original bridge) |
The Bourne Valley Viaducts are two Victorian brick railway viaducts in Bournemouth and Poole, England. One bridge is disused while the other carries a section of the South West Main Line from London to Weymouth between Bournemouth railway station and Branksome railway station.
In 1888, London and South Western Railway constructed a viaduct consisting of ten curved arches.[1] In 1893, another viaduct was built on its west side that created a triangle of routes, allowing incoming trains to travel west towards Poole bypassing Bournemouth West railway station. The railway bridge crosses the River Bourne. Underneath the bridge are Surrey Road and Gordon Road near Coy Pond and Bournemouth Gardens as the railway follows Bourne Valley Road towards Branksome.[2] The original bridge was closed in 1965 during the Beeching cuts.[3] On 27 March 1941, an Luftwaffe air raid in World War II hit the nearby canteen at Bourne Valley Gasworks killing 33 people.[4] It is believed that the viaducts had been the intended target.[5] In 2020, a lorry crashed into the bridge.[6] The low arches at Bourne Valley Road reportedly make accidents common.[7] In 2023, improvements to the bridge were carried out by BCP Council.[8]
The military defences from World War II remain beneath the bridge.