Drivers in Tandragee are being advised to avoid the Portadown Road.
It's after a two-car crash brought down a telecoms pole with a streetlight.
A police spokesperson said one driver was taken to hospital as a precaution.
She added it will take a while to clear and secure the area.
The Portadown Road is closed between Ballyknock Road and Brackagh Road.
It's expected to be closed for most of the afternoon.
More than 200 police officers assaulted in NI over Christmas period
By Claudia Savage (Press Association)
Minister halts business rates process after hospitality backlash
By Jonathan McCambridge (Press Association)
Tributes paid to man who died after car crashes into shop in Co Tyrone
By Gráinne Ní Aodha (Press Association)
Four more Santander branches to close in Northern Ireland
By Henry Saker-Clark (PA Deputy Business Editor)
Mike Nesbitt to retain position as Health Minister
By Jonathan McCambridge (PA)
Download the Q Radio app to keep listening, wherever you are! It's available on Apple and Android devices.
Download from the App Store Download from Google Play
