Never miss Bristol news again - sign up to receive our newsletter straight to your inbox Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Drivers will have to make sure they watch their speed on the M32 from next week, when average speed cameras are switched on.

The cameras have been installed while workers replace an ageing central barrier on the Eastville viaduct – the elevated stretch of the motorway which spans the Muller Road roundabout.

But one of the cameras cannot be seen if you are driving on the outbound M32 – it is perched on a pole near the start of the northbound slip road from the St Paul's/Easton Way roundabout.

The roadworks to replace the old steel barrier with a concrete one will take 11 weeks to complete.

During that time, there will be some overnight road closures but during the day the motorway will be open.

The area affected by narrow lanes, already installed on a stretch of the road by the St Paul's junction for MetroBus works, is expected to increase.

And the 40mph speed limit, first introduced in August 2014 when the old central barrier was ruled unsafe after an inspection, will now be enforced to protect workers replacing it.

(Image: Jennie Banks)

A spokesperson for Highways England, which is responsible for the motorway, said: “We are installing temporary average speed cameras to ensure the safety of road workers and drivers. These will be removed when the works are completed.

“We are also putting in place temporary CCTV, which will allow us to respond to breakdowns and incidents within the work quickly and also monitor safety.

“The M32 is the key route in and out of Bristol and we always plan works very carefully to ensure disruption for the thousands of drivers who use it every day is kept to a minimum.”

The work will be carried out in phases and will see overnight closures of the north and southbound carriageways at various points between the Hambrook, Eastville and St Paul's junctions from 8pm to 6am, Mondays to Fridays.

Fully signed diversions will be in place when the road is closed - but the work coincides with nighttime closures on Stapleton Road, which will add to problems for drivers heading towards the north east of the city.

Real time updates are available from Traffic England here.