|Location||Thornaby, United Kingdom|
|Depot code||51L (1958-1973)|
Thornaby TMD was a railway traction maintenance depot situated in Thornaby, England, latterly operated by DB Schenker. The depot was situated to the east of Thornaby, on the northern side of the line to Middlesbrough.
In the mid-1950s as part of British Railways modernisation plan, projects were developed to centralise the marshalling of goods wagons and the associated servicing of steam locomotives at the United Kingdoms largest freight hubs.
Teesside had a number of marshalling yards servicing the coal mines and steel mills of Consett, West County Durham and North Yorkshire, as well as those for Middlesbrough Dock. The decision was hence taken to rationalise these to one yard, Tees Marshalling Yard on part of the site of the once electrified Erimus Marshalling Yard.
Existing in the area were also four older steam sheds, which BR also planned to rationalise and close:
BR began construction in 1957, building its last roundhouse for steam locomotives. Developed on a 70 acres (28 ha) site for the shed and its associated facilities alone, it was equipped with:
All the structures were made from pre-stressed and pre-formed concrete pieces, and when the shed opened in June 1958 with shed code (51L), the total construction had been completed for £1.25million.
On opening, the shed initially took over the allocations at Newport (depot code 51B) and Middlesbrough (51D).In June 1959 the depots at Stockton (51E) and Haverton Hill (51G) were closed and the bulk of their locomotives added to Thornaby's allocation. At this time the depot had the largest allocation of any single depot in the country, although Stratford (30A) had a larger allocation but shared with 6 sub-sheds. The depot was closed to steam in December 1964.
Under TOPS, the depot code was TE. The logo applied to the sides of Thornaby locomotives was a white Kingfisher.
Apart from the ubiquitous Class 08 shunter, early diesel allocations included members of Class 03, Class 04, Class 17, Class 25 (from the first batch built at Darlington), Class 27 and Class 37.
In the later years prior to closure, Thornaby TMD was home to Class 08/09, Class 37, Class 56, Class 60 and Class 66's. Following closure, the depot was used to store Class 08/09 and a number of Class 56s which fell victim to metal thefts. These were all removed and sent for scrap prior to demolition works commencing.
The buildings were demolished between May and July 2011.
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