The A66 is closed in both directions with slow traffic due to flooding between A5086 (Cockermouth Roundabout) and Embleton Road.
Police are currently at the scene directing traffic and are advising motorists to avoid the area if possible.
The closure and flooding is affecting traffic heading between Workington and Keswick.
More top news
A look ahead at the forecast for the Border region.
Over the next eight years the populations of all but nine local authorities in England will increase. Four of those are in Cumbria.
The Psychoactive Substances Act will come into effect tomorrow, and could see offenders jailed for up to seven years.