Drivers were hit by delays approaching Kettering town centre yesterday evening (Monday, September 9).
Heavy rain caused a manhole cover on the uphill carriageway of Rothwell Road to become dislodged and then jam into the drain.
Police closed the carriageway until engineers could replace the cover, affecting rush-hour motorists.
The uphill lane of Lower Street was also shut off after flooding hit.
An Anglian Water spokesperson said: “We’re sorry that the manhole on Rothwell Road has needed replacing after heavy rain caused it to dislodge. We recognise this is the second time this has happened recently and we apologise for the disruption caused to road users.
“Since the first incident we’ve been looking at alternative options for the manhole to prevent this happening in future. We are currently assessing which solution will work best both for efficient drainage and for the highways agency in this busy location, but we do intend to replace the manhole cover once a suitable alternative is found.”
According to the forecast issued by Pitsford School’s weather station, the north of the county could be in line for showers this afternoon (Tuesday) and heavier rain on Wednesday.