Work had been stopped during lockdown
The dredging of Peel Marina has been extended for one month, meaning it will go on until the end of June.
Work had been halted for four weeks during the coronavirus lockdown, before resuming at the end of April.
Two tractors with trailers are being used to move the dredged material away from the marina to a temporary drainage pool in a field upstream, with the work taking place from 7am to 7pm, Monday to Saturday.
Closures remain in place on the heritage trail and Mill Road to facilitate the transportation of it.
Crash which closed the Mountain Road ahead of racing 'not too serious'
Delay to TT schedule following Mountain Road crash
TT campers in 'high spirits' despite rain affecting race week
Influencers told 'get your facts right' about Island's speed limits
Increase in number of patients transferred to UK