A 255ft-long and 14ft-wide load, weighing 331 tonnes was delivered in West Sussex at the weekend.
Police warned motorists to beware of the extremely heavy load and were advised to plan ahead as the electricity transformer was transported through Sussex.
The load left Shoreham Port at 5.30am on Sunday and arrived at Wineham Lane, Henfield, at around midday.
The operation was carried out by Sussex Police’s Roads Policing Unit in conjunction with Highways England and Brighton and Hove City Council.
Sergeant Dan Pitcher, of the East Sussex Roads Policing Unit, said: “This is a substantial load and to ensure the safety of all motorists, we will enforce rolling road closures and periodic full road closures on the route throughout the day.”
The vehicle used to move the transformer was long so as to spread the weight out along the various wheels.
Sussex Road Police tweeted at midday: “And we are done.”
“Thank you for your patience all delivered.”