The next section is the least preserved part of the navigation, which skirted to the east of Eastleigh Sewage Treatment Works, to a point where it was crossed by the railway from to . Two lengths have been filled in, and although there is a footpath, it follows the approximate route of the navigation, rather than the actual towpath. The railway bridge was built in 1841 and originally had two arches, one for the navigation, and another for the landowners. Replacement was necessary in 1979, and the bridge was demolished. Part of it was replaced by an embankment, but a large-diameter concrete tube was provided, or sufficient size to carry the navigation should it be reinstated. The next lock is Lock House Lock, which was also called Chickenhall Lock. The name reflects the fact that there was a lock-keeper's cottage by the structure, but this has long since disappeared.