Delays of more than 1 hour on M1 near Northampton due to emergency carriageway repairs
Highways said at about 3.20pm that unplanned work is being carried out on the southbound road surface. As a result, one lane is closed.
A spokesperson said: "At present there are delays of more than an hour on approach.
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Hide Ad"Traffic between Birmingham/ The Midlands and London is advised to use the M40 if at all possible to avoid these delays."
A knock-on effect is slow traffic on the A508 both ways between Grange Park and Roade as traffic diverts. There are also temporary traffic lights causing delays on this route.