Road Structures

Allerton Steel, on behalf of R J McLeod, has fabricated the steelwork for a replacement bridge at Loch Ba on Rannoch Moor in the Highlands as part of its A82 upgrade scheme for Transport Scotland. R J McLeod is the civil contractor on the £2.2 million (E2.6 million) scheme which replaces the existing three-span reinforced concrete bridge.

Five buoy-mounted automatic water quality monitors (AWQMs) have been installed by YSI Hydrodata engineers at the new Tyne Tunnel project in north-east England. The equipment on the second vehicle tunnel under the River Tyne, currently one of the UK's largest construction projects, aims to ensure that construction operations do not significantly affect river water quality. Unusually, the contractors have not taken ownership of the instrumentation, preferring instead to simply purchase the data and alarms. Th

A new bridge is being constructed across the Vistula River near Grudzi?dz, Poland, and for the foreland bridge from south-east direction, a so-called incremental launching method is being used. Two lanes, each some 556m long, are being constructed in 25 concreting cycles with standard lengths of 24m, while the formwork is 25m long and is positioned behind the bridge abutments.

The stone mastic asphalt surface being laid on the bridge deck. The Stonecutters Bridge in Hong Kong, the second longest spanning cable stayed bridge in the world, is a dual three-lane crossing of the Rambler Channel. It utilises 33,500tonnes of structural steel in the bridge deck; 32,000m3 of concrete in the towers and 65 steel deck units relying on 224 cables. Effectively protecting the megastructure's deck from the weather extremes (monsoon rains and extreme heat in the summer) and the high levels of tra

Iran's congested capital Tehran is now benefiting from a new underground road tunnel that carries traffic under the city.

AN INNOVATIVE slurry wall solution has been used by Bachy Soletanche at the Alderley Edge By-Pass project in the UK. Bachy Soletanche provided assistance for the A34 Alderley Edge by-pass project in the UK being carried out by main contractor Birse Civils. This solution was required to tackle challenges posed by the water table at the Welsh Row section. Bachy Soletanche used its experience with slurry cut-off walls, a technique rarely used in Britain on road construction, to benefit a tricky section of the