This from Southern Vectis. In their own words. Ed
The diversion for route 3 from Shanklin towards Ventnor will operate via Victoria Road, Shanklin, Shanklin Road, Whiteley Bank, St Johns Road, Wroxall, Clarence Road and Newport Road in Upper Ventnor, then Ocean View Road, Mitchell Avenue and St Boniface Road to rejoin the normal journey at the bottom of Leeson Road.
Buses from Ventnor towards Shanklin will operate the same diversion in the opposite direction.
Image: Local People Archive under CC BY 2.0