Ongoing traffic management during the refurb on Douglas Promenade has cost nearly £356,000.
The figure was revealed in response to a Freedom of Information request which asked what the cost is for the coning and signage in the area while the works are taking place.
The project has come under scrutiny recently, with Infrastructure Minister, Ray Harmer MHK, saying the initiative is currently running around nine weeks behind schedule.
So far it's projected to be completed by October next year.
Stop putting knives in recycling, says council
Bee Gees to release limited-edition box set
Northern Irish politician criticises Manx visa rules
Elective surgical unit opens at hospital
Piling rig on TT course tonight
10-day bus strike from next weekend
Yellow snow warning issued by forecasters
Ramsey harbour keeper completes 3,000-Mile Atlantic crossing