What are they doing here thats causing the height restriction.I cant think of any reason
London to Norwich? That is one hell of a closure 
I’m assuming…
There’s overnight road resurfacing and the only diversion has a low bridge?
Oh,I see ,that makes sense,yes you have to go all the norwich ring road to drive back down the a11 to snetterton!
The same problem was with the Norwich ring road was when the water main burst and we had to go around the ring road
I believe that’s the northbound stretch through the roadworks from wymondham to Norwich.
There’s a full contra flow in place, south has crossed over to the north and forced the north carraigeway over to the left leaving it close to structures, like when you get the hard shoulder removed in short stretches around bridges as they are arched down near the edge.
It’s 15’6 now. You could hop further west down the A14 and take the B1113 through the villages if you want, no bridges, or of course the A140.
There is no restriction southbound.