(31 May 2014, 12:11 pm)Marcus wrote The Lime uses single deckers as a result of Pelton Bridge, where my late grandad lived and I used the buses on a regular basis from there. The Waggonway is for the same reason. I think the 4 and 2A/2C are restricted because of a bridge somewhere between Washington and Houghton?
Penshaw Bank Top, underneath the old Leamside Line.
It is a very similar set up/situation to the bridge at Pelton.