Second Severn Crossing (United Kingdom)

Regen concrete reduces CO₂ emissions 

Over a distance of roughly 5 km, the Second Severn Crossing spans the mouth of the Severn River between Bristol and Cardiff.

The central span is a cable-stayed bridge measuring 456 m, carried by two 137 metre-tall concrete pylons and with a height clearance of 37 m from the road surface. The tidal range in this area of the Severn Estuary is 14.5 m. The bridge features three lanes for traffic in either direction, as well as a full width shoulder.

The bridge was built almost entirely of precast concrete elements. Heidelberg Materials supplied the 320,000 m³ of concrete and 60,000 t of Regen needed for the project. The use of Regen substantially reduces CO₂ emissions associated with concrete manufacture.