The canal’s immediate commercial success, followed soon after by that of the Bridgewater Canal, led to a mania of canal building, and for further extension schemes to be proposed for the Sankey Canal. Francis Giles' proposal to link the canal to the Bridgwater Canal was not implemented, and neither was a plan to link the canal to the Leeds and Liverpool Canal near Leigh, to the North-East. Apart from the early extension to Fiddlers Ferry, which provided better access to the River Mersey, and the 1775 extension to St Helens, the only major change came with the extension to Widnes in the 1830s. In 1845 the St Helens and Runcorn Gap Railway Company and the then more prosperous Canal Company merged to form the St Helens Canal and Railway Company. Its occasionally used name is the St Helens Canal. The ending of the sugar traffic in 1959 led to the closure of the canal in 1963. North of the sugar works, closure had taken place in 1931, and fixed bridges quickly replaced the old wooden swing bridges. The canal, however, remains largely in water right up into the centre of St Helens, although its terminus had been truncated in 1898, when Canal Street was built over it. Restoration of the canal began in 1980, when work began on the section between Bewsey and Liverpool Road, Great Sankey, funded by a Derelict Land Grant. Most of the canal is still in water and much has been restored to navigable standard, with short sections at Fiddlers Ferry, Warrington and Spike Island, Widnes having locks into the Mersey which have allowed craft access to the canal for mooring since the locks were restored in the 1980s. However, fixed bridges which replaced the original wooden swing bridges and other obstructions isolate the sections from one another. The route of the canal passes through the Sankey Valley Park and the towpath from Sankey Bridges to Widnes now forms part of the Trans Pennine Trail. There are plans to restore the canal, and perhaps to extend it northwards to join the main canal system via the Leeds and Liverpool Canal. The total cost of this would be in excess of £100m and it is therefore a long-term project. There are, however, plans to dig out an infilled section in the centre of St Helens as part of the town's Eastside development. A feasibility study for this work was funded by a grant from the Single Regeneration Budget Fund, while at the other end of the canal, the Widnes Waterfront plan, published by Halton Council, and the new Mersey crossing between Widnes and Runcorn were expected to lead to further restoration at Widnes.