The commissioners are pedestrianising the area
Market Square in Castletown is closing to vehicles from 4 March.
The square has been pedestrianised during the summer for the last few years and the commissioners have recently applied to have the square closed permanently.
The closure will run from The Parade, to its junction with Malew Street, and Arbory Street.
It will end at 6pm on 1 October.
TT organisers announce revised Saturday race schedule
Senior race to be restarted over four-lap distance tomorrow (6 June)
TT campers in 'high spirits' despite rain affecting race week
'Costa del Ballaugh' one week, mud the next
Rider taken to Noble's Hospital after Senior TT red flag
Competitor 'conscious and talking' after incident at 11th Milestone
Red flag stops Senior TT race
Race halted during second lap
Further delay to TT schedule due to 'non-racing operational matter'
Clerk of the Course confirms change to proceedings