Essex's main roads include the A12 and M25, alongside an important section of the travel network at the Dartford Crossing. M25, Dartford Crossing and A12 closures for Friday, September 5M25A carriageway, slip road and link road closure will be in place on the M25 Clockwise from Junction Jct 25 to Junction 27, from 11pm to 5.30am. A12An entry slip road closure will take place on the A12 northbound at Junction 29, from 9pm to 5am. M25, Dartford Crossing and A12 closures for Saturday, September 6M25There are no closures scheduled on the Essex M25 junctions on this day. M25, Dartford Crossing and A12 closures for Sunday, September 7M25There are no closures scheduled on the Essex M25 junctions on this day.