Tinsley Viaduct

Tinsley Viaduct
Tinsley Viaduct as seen from Meadowhall, with the two cooling towers of the former Blackburn Meadows power station before their demolition in 2008.
Coordinates	53°25′03″N 1°24′21″W / 53.41750°N 1.40583°W / 53.41750; -1.40583
OS grid reference	SK394913
Carries	M1 A631
Crosses	River Don Sheffield Canal Midland Main Line South Yorkshire Railway Sheffield Supertram
Locale	Tinsley/Wincobank
Maintained by	National Highways
Characteristics
Design	twin deck box girder bridge[1]
Total length	1,033 m (3,389 ft)
Width	6 lanes
Height	20 m (66 ft) (to upper level)
Longest span	50 m (160 ft) (20 spans)
Clearance above	10 m (33 ft) (on the A631)
Clearance below	10 m (33 ft)[2]
History
Construction start	Spring 1965[3]
Construction end	1968
Opened	25 March 1968 (lower deck)[3] 19 October 1968 (upper deck)[4]
Statistics
Daily traffic	100,000 vehicles/day[5]
Location

Tinsley Viaduct is a two-tier road bridge in Sheffield, England; it was the first of its kind in the United Kingdom. It carries the M1 and the A631 for a distance of 3,389 feet (1,033 m) over the Don Valley, from Tinsley to Wincobank, also crossing the Sheffield Canal, the Midland Main Line and the former South Yorkshire Railway line from Tinsley Junction to Rotherham Central. The Supertram route to Meadowhall runs below part of the viaduct on the trackbed of the South Yorkshire Railway line to Barnsley.