A £4m project to carry out essential repairs to Yeadon Way is now well underway.
Contractors Galliford Try began work on November 10 to upgrade the three kilometre route which takes traffic from the M55 motorway into the heart of the resort.
Coun John Jones, cabinet member for highways, said the project was progressing well.
He said: “The contractors have removed the concrete barriers on either side and the fencing.
“They have also taken the top off the road so they can identify any other defects there might be and they are working on the embankment.
“They got on there straight away on November 10 and the weather has also helped and they are really getting on with it.”
Coun Jones claimed the diversion routes were working.
He said: “We had a lot of consultation through area forums, the media and letter drops in the area where the work is being done.
“People knew what was happening and we have worked out a good diversion, which is easy to follow and there is a link for hoteliers on the VisitBlackpool website.
“We have also worked with the BID (Business Improvement District) as we didn’t want the closure to have a negative impact on business in the town for Christmas.”
Yeadon Way will be closed for four months in total and is due to re-open at the end of March.
The council secured funding from the Department of Transport for the scheme after experts warned the road, which is built on a former railway embankment, could collapse unless the repairs were done.
The road, which opened in 1986 and carries seven million cars a year, includes five bridges, some of which have suffered severe cracking.
Thousands of metres of watercourses and hundreds of gullies alongside Yeadon Way are also being cleared as part of the scheme.
Over the years, some of the drainage systems have become blocked or overgrown, meaning rainwater falling in the area was slow to run away into flood plains or sewers.
In total, 5,636m of watercourses and 2,232m of highway sewers are being cleared.
Traffic is being diverted via Progress Way, Squires Gate Lane and Lytham Road.
Originally the work had been due to start in October, but was postponed until after the Illuminations following talks with tourism leaders.