There is a very substantial bridge at Inchvuilt, or at least there was when I was there last.Also the fb at nh226383 is no longer, but is easily fordable to pick up the old stalkers path by the Allt Innis a'Mhuilt.

Ignore that last message,I am sorry for the misinformation. The bridge at NH262383 is intact and used by me.Traces of the old path followed up the Allt Innis na Lairich to about NH256359 Bealach a' Bhaca. follow the vague path on the East side of the Allt a' Bhaca then the Liatrie burn down to the road at nh251327.

Many thanks. Going for that last suggestion - much appreciate it,
Simon.