Small Dean Viaduct

Small Dean Viaduct is a viaduct currently under construction in Buckinghamshire which will carry the High Speed 2 railway line.

Small Dean Viaduct
Coordinates	51.7500°N 0.7368°W / 51.7500; -0.7368
Carries	High Speed 2
Crosses	A413 road
Locale	Wendover
Characteristics
Total length	345 m (1,132 ft)
No. of spans	6
Rail characteristics
No. of tracks	2
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Electrified	25 kV 50 Hz AC
History
Architect	Moxon Architects
Designer	ASC (Arcadis, Setec and COWI)
Constructed by	EKFB (Eiffage, Kier, Ferrovial, BAM Nuttall)
Location

Approval for the viaduct was granted by Buckinghamshire Council in April 2023.^[1]

The viaduct is 345 metres (1,132 feet) long and will pass over the A413 road which will be realigned.^[1] A shared-use path will also be provided.^[2]

The viaduct will have a low profile with the underside of the viaduct 6 metres (20 feet) above the road surface below. It will be supported by five Y-shaped piers and girders made from weathering steel.^[3]