One of the earliest transport schemes in Salford was constructed by the Salford to Wigan Turnpike trust, by an Act of Parliament of 1753. Turnpike roads had a huge impact on the nature of business transport around the region. Packhorses were superseded by wagons, and merchants would no longer accompany their caravans to markets and fairs, instead sending agents with samples, and dispatching the goods at a later date. However, road transport was not without its problems, and in 1808 the Manchester Bolton & Bury Canal was connected to the River Irwell. In the main a coal-carrying canal, it provided a valuable boost to the economies of Salford and Manchester, with a large number of wharves at its terminus in Salford. Sixteen years later John Greenwood started the first bus operation from Pendleton to Market Street, Manchester.