Cumbria Police say the A66 will remain closed at Threlkeld "for the foreseeable future".
Diversions are in place.
People travelling from Keswick are asked to travel along St Johns in the Vale.
Those travelling from Penrith, will be turned round at Rheged and are advised to use the M6 routes.
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The weekend is hours away - and if you are in Cumbria you have the bonus of it being a Bank Holiday.