Maltmill Lane was further east - in front of the old railway arches flattened for the college.  Alas my recent photos only show the southern half where it definitely doesn't meet the crossing - that section is flower bed now and the only low level path is to the east of the viaduct upto the Broadmarsh entrance.

The photos I have at the northern end pre-date the basket ball courts and skatepark and show both the western path and path under the viaduct.  Need to do another survey.