The northbound entry slip road at M3 Junction 9 near Winnall will close at 9pm on Friday, July 31 and reopen in winter 2027. "So, the M3 northbound slip from Junction 9 will be closed as of the Friday night, until late 2027. Dan Kittredge (Image: Chris Atkinson)The closure has sparked fears over where drivers leaving Winchester at Junction 9 will go to head north. "This will increase the traffic passing through the Cart and Horses junction. The Cart and Horses junction is notorious in Hampshire, with the most recent accident taking place in March.