Experts say the colony was probably there for several years and took more than 12 hours to remove.
Drivers will have to take a four-mile diversion northbound to Dry Drayton.
See what life is like as a medical photographer at a city hospital.
Poor accountability was to blame for severe rail disruption last May, a regulator has said.
Kai Nazir is understood to have posted the video on Friday, four days after being jailed for life.
Peterborough return to the top of League One as a wonderful strike from Ivan Toney helps his side beat Gillingham.
George Maris strikes late to earn Cambridge a draw with Mansfield at Abbey Stadium.
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