I'm afraid that it is not possible do do this in any other way than to wait for the quarterly map release at this time.
My apologies for the inconvenience.
This is an absolute JOKE .....
Users of satnavs in this day and age should not have to wait for a quarterly update to maps especially when they are major road change.
I think Tomtom need to look at their procedures and seriously change things otherwise they will lose a lot of customers over this issue. I can understand minor road changes taking a while to get into the system, but a major road change like the mersey gateway that has been years in the planning and then for Tomtom to release the map update for it to be incorrect in layout and also for the sat nav not to let you use the crossing.......PATHETIC!!!!!!......
I think it is time for a change of satnavs and cut my losses