A 420 Oxford to Swindon

Hi all anyone Know if the 420 is open or closed overnight . It is showing as closed on google maps for over a month now . I see no sign of any roadworks or divertion signs when i return ( about 5.30 am ) thanks for any help H

All done, I use it most days.

Thank you I will go that way tonight H

beerbottles:
Thank you I will go that way tonight H

Was it open beerbottles?