Roadworks scheduled to rumble on until mid-September have finished a week early.
Oxfordshire County Council said the £3.5m project to resurface the A420 at Shrivenham would likely last until September 7, after starting on July 23.
But the authority today hailed the “hard work” of its engineers.
Cabinet member for transport David Nimmo Smith said: “This is excellent news and I am sure that local people and the travelling public who use the A420 will be delighted.
“The A420 was in desperate need of significant repair and I am pleased we managed to complete the work before Network Rail close the A417 for their electrification work and before the schools returned.
“It is not always possible to do things ahead of schedule, but our engineers and contractors always try their best to work quickly and safely.
“As well as celebrating the early finish I would like to thank the local people and road users who have been very patient during such a major job.”
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