National Highways are starting to replace two expansion joints on Orwell Bridge, on the A14 near Ipswich, starting from tonight 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 your drivers may need to know about.

What works are planned?

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.

What closures are in place?

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

·         From Monday, there will be overnight lane closures in both directions between 20:00 and 06:00 BST                      the following morning

·         From 20 June to 24 June, including weekends, the eastbound carriageway will then be closed                                  overnight for the same hours. The westbound carriageway will remain open, but reduced to                                    one lane overnight

·         From the morning of 21 June, a reduced speed limit with apply in both directions.

·         From 23 June, the eastbound carriageway will be reduced to one lane during the daytime, but                                the westbound will be unaffected

·         From 25 June, the westbound carriageway will be closed from 20:00 and remain closed

·         From 26 June to August there will be a contraflow system in place with one lane open in each                                  direction, 24/7.

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)."

 What are the diversions?

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.