Milton Bridge brought large-scale interwar steel engineering to the Nethan corridor and still carries the former A74, now B7078.
Quick facts
- Date
- 1938
- Architect / designer
- Engineer and contractor not identified in the designation
- Type
- Large cantilevered steel road bridge with masonry supports
- Designation
- Listed building, Category B (LB7702)
- OS grid reference
- NS 81447 40609
Architecture and continuing use
A 140-foot central span and two 72-foot side spans form shallow segmental curves between red-sandstone piers and abutments. Cantilevered steel construction produces a markedly lighter and broader crossing than the older masonry bridges nearby.
Its story
The bridge opened in 1938 as the A74 bypassed the village centre. Motorway construction later displaced long-distance traffic, and the route became the B7078. Council roadworks in 2025 confirm its continuing highway role.
Why it is included
Category B listing recognises an early large cantilevered steel road bridge and the engineering scale of interwar trunk-road modernisation.
What to notice
- The long 140-foot central steel span.
- Red sandstone supports beneath the shallow arches.
- Older Nethan crossings visible within the same route corridor.
Reading the surroundings
This is an active road bridge. Use designated pedestrian provision, follow traffic management and never stop in the carriageway to view the structure.
Timeline
- 1938 Milton Bridge opened on the improved A74 corridor.
- 1960s Motorway development reduced its long-distance trunk-road role.
- 2025 Council resurfacing works maintained the B7078 approach beside the bridge.
What we know — and what remains uncertain
The designation does not name the engineer or contractor. Temporary road restrictions should be checked before visiting.
Sources & further reading
- Historic Environment Scotland: Milton Bridge, Lesmahagow, LB7702 — Current designation status, official mapped location, date, fabric and significance.
- Trove designation: LB7702 — Parallel national designation identity and archival context.
- South Lanarkshire Council: B7078 repairs at Milton Bridge — Council confirmation that Milton Bridge remains part of the working B7078 road corridor.
- Lesmahagow local history: bridges and trunk roads — Local route history distinguishing the old bridge, disused Telford bridge, 1938 Milton Bridge and later motorway crossings.
Location
OS grid reference NS 81447 40609 · Location confidence: High: the current national designation supplies an exact mapped National Grid Reference; public text separately states access and current-use uncertainty. · Select the marker to open its satellite view in Google Maps. On desktop, drag Pegman (the yellow figure) onto a blue road. On mobile, turn on the Street View layer and tap a blue road. Other photo markers may be user-contributed.
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