A MAJOR route into Portsmouth will be closed all weekend for repair work.
The A3M slip road on to the A27 will shut at 10pm tonight and will not reopen until 6am on Monday.
The Highways Agency is carrying out maintenance on an expansion joint on the Farlington viaduct.
The closure comes despite lengthy delays during the full weekend closure two weeks ago. The agency says the closure this weekend is vital. Traffic will be diverted to the Broadmarsh interchange.