A number of planned roadworks and closures are taking place across Norfolk this week that are expected to cause delays for motorists.

Key roads including the A11 and A47 have been affected by the restrictions which are likely to continue into the coming weeks. 

Here are seven roadworks that you should be aware of.

1. Ketts Hill, Norwich

Roadworks started on July 3 to improve safety at the Ketts Hill roundabout which has seen a number of cycling-related accidents in recent memory.

A closure will extend 30m along Gurney Road to its junction with Heathgate, as well as restricting access from Ketts Hill. 

Traffic between Bishop Bridge Road and Barrack Street will be restricted to a single lane and temporary traffic lights will be in place until August 11 when the work is set to end. 

2. A11 Attleborough

Continuing work on the A11 has seen traffic disrupted for more than a year, with a fresh delay recently announced

From July 24, the southbound carriageway has been closed between Attleborough and Thickthorn and it not expected to be completed until August 4.

READ MORE: When will the A11 roadworks be finished?

All closures take place between 8pm to 6am with a diversion route along the A140 Ipswich Road and the A1066 between Diss and Thetford to rejoin the A11.

3. Ipswich Road

Ipswich Road will be affected in August by roadworks to resurface the road, install in-road cycle lanes and double yellow lines, introduce a 20mph speed limit and alter parking bays. 

From Wednesday (August 2) the road will be closed between Harford Manor School and Grove Avenue from 7pm to 6am.

Those driving into the city during this time can use Hall Road, Newmarket Road or Unthank Road as alternative routes.

4. A47 Great Yarmouth

As part of the work to complete the £121m third river crossing project, Great Yarmouth has experienced a slew of road closures and restrictions during its two-and-a-half-year construction. 

The A47 through the town will be closed overnight in both directions from the Acle New Road roundabout to the Gapton Hall roundabout for bridge maintenance on Thursday (August 3).

This work will be undertaken in stages throughout August and September, with no finishing date yet to be announced.

5. Norwich Road, Swaffham

Those going toward Swaffham from Norwich may find delays on the Norwich Road turnoff due to temporary traffic lights between the A47 and Dove House Row. 

READ MORE: 'Rolling road closure' for town Pride march likely to cause delays

These will be in place until August 18 and come as part of planned works by UK Power Networks. 

An alternative route into Swaffham can be taken via the bypass and onto Castle Acre Road.

6. Boundary Junction, Hellesdon

An eight-week scheme to replace all of the traffic lights at the busy Boundary junction is fully under way this week.

The A140 Aylsham Road, Cromer Road, and Reepham Road are closed as part of the multi-phase change.

The work was postponed last year amid complaints from business owners, drivers and councillors about the overall volume of roadworks in the area.

7. The Avenues, Norwich

The Avenues in the east of the city will be closed until August 11 while Cadent carries out a mains replacement project.

It will be shut from Colman Road to Corie Road with signposted diversions in place.

First Bus will divert its Blue Line services 26 and 26A will stop serving Colman Road and the Avenues.