Where the temporary lights were by the old Fire Station at the junction of Frankwell Street, Ffordd Cadfan and Red Lion Street, the road has now closed until Thursday 27th August.
Buses serving Tywyn High Street and the Co-op will be delayed as they complete a loop of the town.
We're experiencing delays of up to 15 minutes as a result of the diversion and cannot guarantee connections at Dolgellau or Machynlleth.