The work, which begins on September 29, will involve the replacement of just over half a mile of worn-out steel barriers with a concrete system and the replacement of the expansion joints.
Daytime lane closures on entry and exit slip roads and overnight full closures of the north and south bound carriageways will be in in operation in the area while the work is being carried out. Diversion routes via the A38, from junction 23 southbound and junction 24 northbound, will be clearly signposted.
Highways Agency manager, Andrew Clark, said:
This work is needed to maintain safety and prolong the life of the bridge. Improved drainage will also be installed.
We would remind all drivers to pay extra attention while driving through roadworks and observe all speed limits which are there for everyone’s safety.
The work is due for completion in March 2015. A temporary 50mph speed limit will be enforced for the safety of drivers and the workforce.
Members of the public should contact the Highways Agency Information Line on 0300 123 5000.
Journalists should contact the Highways Agency press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.