When the A417 was first designated in 1922, it ran only from Streatley to Cirencester. In 1935 it was extended to Gloucester, on the former route of the
A419, and on to
Ledbury and Hope under Dinmore. There have been numerous upgrades and bypasses, particularly on the primary section. At
Faringdon, its traditional route over
Folly Hill and down through the market place has been blocked by the more recent development of the
A420 and the road has been diverted to the south. The
Birdlip bypass, opened in 1988, avoided a steep (16%) gradient as the road descended the
Cotswold Edge escarpment to
Brockworth. On 31 December 2022, the 200-year old
Air Balloon pub at the roadside near Birdlip closed for the final time, before demolition to allow the road to be upgraded.
Brockworth bypass Southeast of Gloucester, the A417 originally followed a stretch of
Roman road through the rural parish of
Brockworth. A factory was built here by the
Gloster Aircraft Company, followed by other industries and housing. A draft route was published at the end of January 1991 to bypass Brockworth to the north, with work costing £35m to start in 1993. A three-week public inquiry took place in early November 1991. There were protestors, who offered three alternative routes. Esso and Granada wanted to build a service area on the new bypass, at the bottom of
Crickley Hill. In December 1991
Tewkesbury Borough Council rejected the proposal as it would interfere with the Cotswolds
AONB. The bypass was given the go-ahead in December 1992, with a new free-flow junction 11A on the
M5 motorway. The £34m contract was given to
George Wimpey in December 1993, with the bypass to be completed by the end of 1995. Frank Graham were the consulting engineers. The bypass was opened by
John Watts on 18 December 1995. The new M5 junction was partly opened at the same time, being fully opened on 4 March 1996.
Birdlip bypass In October 1986, the government decided to build a £1.5m bypass to avoid
Birdlip village, a few miles east of Brockworth. The bypass would be long; work was to start in early 1988 and be completed by 1990.
Biwater Construction were given the £1.9m contract in January 1988, to take 18 months. Work started in late February 1988, to be finished by January 1989. The bypass opened on 12 December 1988, eight months early. The official opening was on 12 April 1989. ==Route==