Wales and West Utilities completed the work in the early hours of Wednesday.
The company has thanked local people for their patience, after the lane closures were in place for around 24 hours near Lee Mill, Ivybridge.
During yesterday's (Tuesday 24th July) rush hour, queues were around 5 miles east and westbound.
We’ve finished work to repair a gas leak on the A38 Devon Expressway.
— Wales&West Utilities (@WWUtilities) July 23, 2019
Barring any unforeseen circumstances the road will be fully reopened by 6AM tomorrow morning – in time for the morning rush hour @HighwaysSWEST #LeeMill @southhams_DC @DevonCC https://t.co/r14DgKsKq6 pic.twitter.com/071HKLalQf
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