The county council are reminding motorists to expect major delays on A414 near London Colney.

Essential work is currently being carried out on behalf of Hertfordshire County Council to the Napsbury Lane bridge.

The Napsbury Lane bridge, which crosses the A414 between Park Street roundabout and London Colney roundabout, is undergoing extensive repairs to address corrosion, which has the potential to impact the bridge’s structure.

The work, which began on July 13, has meant that there is a 24 hour lane closure for one lane in each direction - lane two - on the A414 North Orbital.

The lane closures are expected to be in place until October 28.

Terry Douris, Cabinet Member for Highways, said: "We started this essential repair work in the school holidays to try to minimise driver delays. It’s an extensive job so unfortunately there’s no avoiding the fact that the lane closures will still be in place by the time schools return.

"We appreciate that this will most likely mean some fairly lengthy delays for people during peak times, so I’d like to thank people for their patience.

"There is never a good time to do works of this nature, but the bridge will soon be coming to a point where its safety might be compromised and we have a duty to make sure that all road users are safe.

“Where possible, we would suggest that road users avoid this section of the A414, plan ahead and allow extra time for their journeys."

As a result of the works there will be some full closure of the road during the night.

Full details, including the road closure and diversion information, click here.