Echelon Paving Utilised on M74
Scotland TranServ, on behalf of Transport Scotland, recently utilised echelon paving techniques in the resurfacing of the M74 Northbound between junctions 3A and 3.
The resurfacing system requires two pavers (or an extra wide paver) working side-by-side to lay two lanes of surface course, with multiple road rollers then compacting the hot materials evenly. Because the technique lays the road hot to hot, rather than hot material on to cold, the joints are stronger.
Kevin Dunn, Scotland TranServ’s Pavement Manager said:
“This is the first time that this technique has been used on the South West Scotland network. Because the system requires more space and double the resources, our opportunity to use echelon paving techniques have been rare. The M74 at this juncture is three lanes wide, and working under an overnight lane closure allowed our teams the space and time to lay this more durable road surface.”
The joint between lanes is often the first part of the surface to fail, with water slowly seeping into the tiny crevices in between. The constant freeze-thaw cycle of the Scottish winter gradually begins to break apart the road, causing potholes. Reducing the opportunities for this to develop, deliver a longer-lasting, more resilient road surface.
TranServ’s Design Manager, Evan Ferguson added:
“Despite using double the normal resources, echelon paving is more effective when operationally possible. The resurfacing is quicker, but requires a greater orchestration, with particular concentration on health and safety. The health and safety of our workers, contractors and motorists is of paramount concern for Scotland TranServ. With more workers and more vehicles on site, we all need to work together to keep each other safe.”