a roundabout at the north east end of Holes Bay. This section is a dual carriageway as far as Poole Railway Station. The final section crosses the Black Water Channel by the Poole Bridge before terminating at the roundabout on New Harbour Road where the Ferry Port is located. History When first designated in 1922, the A350 ran only from Warminster to Poole. By 1948 the road had been extended north from Warminster to Chippenham on the former routes of the A363 and the A364. In the 1990s the road was extended north from Chippenham to the M4 motorway by renumbering the A429. The Chippenham bypass was built in the 1990s as a single carriageway and was designed for future widening to dual carriageway. Work to dual the section between Chippenham Golf Club, where the original dual carriageway from the M4 motorway narrowed, to the Badger roundabout was completed in 2014, and the section from Brook roundabout to Bumper's Farm roundabout, the junction with the A420 Bristol Road, was completed in 2016. The remaining sections, as far south as the junction with the A4 Bath Road, were completed in the following years. In 2004, the route between Melksham and Semington was replaced by a new road that bypassed Semington and, like the Chippenham bypass, was designed to be dualled at a future date. The New Semington Aqueduct carries the Kennet and Avon Canal over this section. Proposed developments Westbury A controversial £33 million bypass around Westbury was initially proposed in 1997, with public consultation and a selection of route options proposed in 1999. Wiltshire County Council's Environment and Transport Committee selected the Eastern Route (though it was the least popular) as the 'preferred route' in 2001, because the Council said that it offered the best and lowest cost way of relieving traffic congestion in the town centre. The council submitted an initial planning application during 2005. The council said that the government indicated that it was in favour of the project in 2006. The Council presented a further planning application in 2007. The council's selected route (shown on this Google overlay map) would pass to the east of the town. The council expected it to reduce traffic through Westbury, create more space for cyclists and pedestrians, and improve journey time reliability on the A350 by two minutes. It would also provide a new access road to the West Wilts Trading