Motorists will feel safer when approaching Comet Corner junction on the A259 in 2017.
West Sussex Highways is making safety and drainage improvements at the junction in Middleton-on-Sea.
Road users will benefit from greater visibility once the work is finished.
A deceleration lane exiting the A259 onto Middleton Lane is being extended to slow traffic travelling westbound.
It will be safer and easier for drivers, waiting either in Middleton Lane or Worms Lane, to spot gaps in approaching traffic before pulling out.
Drainage ditches and pipes are being improved to prevent water pooling on the road.
The upgrade complements the new Bognor Regis to Littlehampton cycle path, also being built next year.
Full list of improvements:
- Widening the bend in Worms Lane;
- Extending deceleration lane exiting the A259 into Worms Lane;
- Upgrading drainage ditches;
- Installing new drainage pipes;
- Removing vegetation to improve visibility; and
- Widening existing crossing to make it safer for cyclists, pedestrians and mobility scooters.
West Sussex County Council’s Cabinet Member for Highways and Transport, Bob Lanzer, said: “This new scheme will make the Comet Corner junction even safer.
“Drivers will have better sight of oncoming traffic along the A259 when they pull out.
“Flooding problems which affected the junction in the past will also be alleviated.”
He added: “We have planned both the junction improvements and the drainage work at the same time to minimise disruption.”
Middleton-on-Sea Parish Council Chairman Shirley Haywood said: “At long last work to improve the Comet Corner junction is about to start.
“The parish council understands the preferred solution of traffic lights at this busy junction cannot be implemented.
“This is because the proposed cost of £2.5m is well outside the £375,000 budget at present available to the County Council.
“The works now due to go ahead will make this junction safer by both improving visibility and slowing the traffic’s approach to this junction.
“The drainage works also carried out now are extremely welcome given the appalling flooding experienced on this road in 2012.”
Work is due to start on Monday, January 9 and is expected to last for about eight weeks.
It takes place during daylight hours, except for two nights when a new road surface will be laid.
Two-way traffic will be maintained at all times along the A259 during the works.
A section of Worms Lane needs to be closed for the first two weeks of the project.
A fully-signed diversion route will be in place.
Once Worms Lane re-opens, the northern end of Yapton Road will close for the remaining six weeks.
Traffic will be diverted along Worms Lane for the duration of this closure.
The scheme is expected to cost about £550,000 in total.
The highway improvements cost £375,000, funded by developers’ contributions.
The County Council is spending £175,000 on drainage works.