HARTHOPE VIADUCT | WEST COAST MAINLINE, MOFFAT, DUMFRIESSHIRE

Contractors seeking an urgent solution when large voids were found within the structure of a landmark railway viaduct turned to Leca® Lightweight Expanded Clay Aggregate as the lightweight solution. The unexpected voids were discovered behind the abutments of a Victorian bridge during a major £8 million replacement project at Harthope Viaduct on the West Coast Main Line near Moffat, Dumfries & Galloway.
With only five days remaining before possession, contractors Skanska UK Civil Engineering, of Doncaster, working on behalf of Network Rail West Coast Main Line, had to source and install a lightweight product capable of filling the voids without imposing undue loadings on the existing bridge abutments in just 2 days.
FACTS
Amount of material: 2000m3 of LECA LWA (10-20mm)
Interesting Fact: With only five days remaining before possession, contractors Skanska UK Civil Engineering, of Doncaster, working on behalf of Network Rail West Coast Main Line, had to source and install a lightweight product capable of filling the voids without imposing undue loadings on the existing bridge abutments in just 2 days.
Delivery Method: Pneumatic Delivery
Main Contractor: Skanska UK