how long is that going to be closed overnight for? last 2 fridays it’s shut,and had to divert onto the M25,A3 (had signs flashing up closed after A31 
,luckily it wasn’t),heading to Pompey.got marooned on the IoW,after my 9 or so hours break,got the boat back and came back up A34…looks a hell of a diversion anyone heading s/b,then closed again s/b south of Oxford…then got diverted myself before the M40 
i’ll be glad when the roadworks are finally completed…if they ever are.