The proprietors of the Bullo Pill Railway Co. had already, in September 1809, completed the Haie Hill tunnel.

[2] This tramroad would have been built to match that already constructed onshore, as a four-foot gauge plateway with L-section cast iron rails.

Walker's report formed evidence for why the bridge plans were rejected, mostly on the grounds of their effect on shipping.

This positive report was sufficient to cause Brunel to again consider the crossing the river, this time by tunnel, and he is thought to have consulted with Vignoles on the subject.

Some masonry work, including a portion of tunnel lining, can still be seen in a field near Bullo today.