overline en · ADJ
Etymology
From over- + line, by analogy with underline.
Meanings
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(not-comparable) Passing over a railway line.
Despite this slight delay, a bad slowing at Borrowash for an overline bridge under construction, and signals outside Derby, we arrived there "on time" by the public book, though 1¾ min. late by the working book.
1960 March, Cecil J. Allen, “Locomotive Running Past and Present”, in Trains Illustrated, page 176:The greatest number of bridges requiring modification are overline bridges, and many methods are adopted in reconstructing and altering them to give increased clearances.
1958 July 14, “Bridge Reconstruction for L.M.R. Electrification”, in Railway Magazine, page 465:The total cost of overline bridges in 1965 was £1,506,000 […]
1967, Great Britain. Parliament. House of Commons, Papers by Command, volume 39, page 51: