The Department of Infrastructure is planning to close the Mountain Road for up to six weeks this summer.
Transport bosses are planning to shut the road in August to carry out maintenance.
The move could see the route close fully while the work takes place.
DOI officials have already begun informing stakeholders about the plans.
Higher ground could see overnight snow
Investigators say fatal Manx ship sinking 'avoidable'
Family's appeal to bring brain-injured dad home
Island animal charity appeals for help after relentless bad weather
Further appeal for witnesses following incident in Ramsey
Speed restrictions planned for the coast road next week
Hundreds paid by cheque after MiCard scheme scrapped
No drone zone on Tynwald Day