Precast concrete is commonly used in the construction of highway, rail and pedestrian / cycleway bridges for its durability, high quality and low maintenance. Standard sections use a range of spans from 7m to 40m (highway bridges), 4m to 25m (rail bridges), and 9m to 45m (pedestrian and cycleway bridges). They are generally prestressed to enable a high load capacity. The ability to mass produce the required elements and the high speed of erection (minimising traffic disruption) ensures that the project will be cost effective.
Typical bridge components include: