Alice Cunningham

BBC News, Suffolk

Essential work on a major bridge will begin for the next seven weeks.

National highways is replacing two expansion joints of Orwell Bridge, on the A14 near Ipswich, starting from Monday night until August.

The work is expected to cost £6m and once replaced the joints will last for 50 years.

Various lane and road closures are set for the upcoming weeks as well as diversions that drivers may need to know about.

Simon Amor, head of scheme delivery for National Highways in the East, previously explained the bridge had four expansion joints in total - two on each side.

The westbound carriageway joints will be replaced this year during the work and it is expected joints on the eastbound side will need replacing within the next five years.

Mr Amor said the work was "very complicated", but he was confident they would be finished in August.

Here is a detailed look at the closures and other disruption that can be expected, according to National Highways:

As well as this, National Highways said from 26 June the westbound entry slip road at junction 57 for the Nacton Interchange would be closed for the duration of the works.

"Our aim is to reduce congestion caused by joining traffic merging onto the A14 as all traffic approaches the contraflow," it added on its website.

"If you want to join the A14 westbound, you'll be diverted east to join the A14 westbound at junction 58 (Seven Hills Interchange)."

National Highways said the bridge would be open for traffic during "much" of the repair work.

It added the A14 was still the best route to take and encouraged drivers not to divert onto local roads near Ipswich.

However it did warn to allow for more time when making journeys.

While the A14 is closed overnight, diversions will be in place.

There will be a clearly signed route between junction 58 and 55 via the A12 and A1214.

Mr Amor said staff would be working "around the clock" to ensure minimal disruption for drivers.

He stressed that the work was not always visible and sometime workers would be carrying out repairs underneath the road surface.

National Highways added that sometimes workers would be waiting for construction materials to dry or set before continuing with the work.