The tramroad was constructed between 1802 and 1805 or 1806. The tramroad was later worked by locomotives. Blackpool Corporation also gained all 41 trams from the tramroad. The tramroad crossed the River Taff over the Iron Bridge. The tramroad to the Tyla quarries entered the western portal. The Welsh engineer George Overton was consulted, and he advised building a tramroad. Cheltenham was a terminus of the Gloucester and Cheltenham Tramroad. The railway adopted the use of cast iron 'L'-shaped tramroad plates in its construction. This appears to mark the change from operating as a tramroad to being a railway. This section is shown as "tramroad" on early maps. The line is sometimes referred to as the Dinorwic Tramroad or the Dinorwic Tramway. It made use of part of the long defunct Carmarthenshire Railway or Tramroad of 1801. The Sirhowy Tramroad, which was constructed in 1797, ran through what is now High Street. This dock and the tramroad serving it came into use by 1799. It is thought that the tramroad never reached Morben.