Well there are several vehicles that fit this description;
First there are the various Sherman and Churchill ARK's (Armored Ramp Carriers). These could span this type of gap.
Then there is the Great Eastern rocket propelled ramp for bridging gaps, ditches and, walls. It was never used in actual combat but did get demonstrated in Deventer Holland on VE day.
Lastly, there are various bridges that could be carried by Churchill AVRE's and dropped into place.