Travellers were stranded on both sides since the incident happened around 11am on Sunday.
The road is the only link between the south of the country and the Upper West region.
The Ministry of Roads and Highways acting through the Ghana Highway Authority, confirmed that a significant washout has occurred at Doli in the Bole District, 25km away from Sawla on the N12.
A statement issued by the ministry said preliminary investigations suggest that the washout was caused by a broken dam by the side of the Road.
Motorists from Wa and its surroundings traveling to the South are advised to turn off at Sawla and use the Sawla – Fufulso Road to connect the N10 (Techiman -Kintampo Road).
Motorists going to Wa from the South, are also advised to use the Techiman- Kintampo Road and turn off at Fufulso junction and use the Fufulso -Sawla Road to Sawla and subsequently to Wa and beyond.
The statement said Motorists from Wenchi to Wa are to use the new Longoro to Kintampo Road on the N10.
“We assure you that our engineers and technical team are working diligently to address the situation as quickly as practicable.
“We greatly appreciate your patience as we work towards ensuring your safety and the restoration of normal traffic flow,” the statement added.
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