Two major roads remain closed in Cambridgeshire because of fears an aircraft hangar roof at Duxford could be blown off after it was damaged by storm Ciara
Part of the M11 as well as the A505 are closed in both directions close to the Imperial War Museum.
"We are currently assessing the damage caused to the air hangars at IWM Duxford and working with engineers to ensure the buildings remain structurally sound when it is safe to do so. We are currently unable to deploy structural engineers to inspect and begin maintenance work on the roof of the aircraft hangar at IWM Duxford as this could pose a serious risk to the engineers. Once the emergency services determine that it’s safe to deploy engineers to access the roof, this work will be immediately undertaken to ensure the building is structurally secure.
Cambridgeshire Police said a section of roof on one of the aircraft hangars at the museum had been deemed unsafe "and there is a possibility it could be blown off by Storm Ciara".
"Road closures are expected to remain in place for some time until the roof can be properly assessed by a structural engineer and declared safe."
Diversions are in place between junctions nine and 11 of the M11 and between the Whittesford and Fowlmere approaches of the A505.