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Tinsley Viaduct - Strengthening

Project Completed: 2006

About the project

The Tinsley Viaduct is a double deck steel box girder bridge in Sheffield, containing 20 individual spans which culminate in an overall length of 1033m. The upper deck carries the M1 motorway, with the lower deck carrying the A731 two lane dual carriageway.

In 2006 Cleveland Bridge were involved in this viaduct’s strengthening works following an EU directive on load bearing capacity for the introduction of 40 tonne trucks to the UK. Although originally designed to carry 6 lanes, this work permanently reduced this section of the M1 to 4 lanes.

The strengthening works included both the addition of reinforced concrete and additional stiffening as well as the fixing of further shear connectors. The viaduct was also repainted with the roadway resurfaced and doubler plates were welded to the box girders with existing welds repaired. This consummated in a total project tonnage of 2481te.

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