Police in Banbridge are warning motorists of traffic disruption in and around Lenaderg on Monday, 13 July as the Twelfth July Demonstration takes place.
Motorists should avoid the Lurgan Road out of Banbridge and there will be no access beyond Laurencetown for vehicles travelling from Gilford.
There will also be no access from Huntly Road.
Motorists are advised to find an alternative route.
If you are travelling to Portadown/Lurgan from Banbridge you should travel via Scarva or via Blackskull/Donaghcloney.
Traffic is expected to be disrupted from 10am to 5.30pm.
Motorists are also advised to allow extra time for journeys.