Improvements to a stream that runs through Pulrose will mean road closures for up to 12 weeks.
The Department of Infrastructure says it needs to prepare culverts for Farmhill Stream, which runs under Groves Road to the River Dhoo.
The DOI says flood risks show work's needed to prevent flooding at the National Sports Centre in extreme weather events.
As a result, part of Groves Road will close on November 7 and reopen when the work is finished at the end of January.
Framework of new Sea Services Agreement ready, says minister
Attorney General says he's stepping down
Road closures in two towns for running event this week
Six weekend ferry crossings could face disruption
President of Tynwald announces retirement
Police close Mountain road
Fuel firm says "fingers crossed" for calmer energy costs
Ring doorbells will need data protection registration - but shouldn't cost you money