Details for timber bridges with asphalt wearing surfaces

Timber bridges for road traffic are built out with an asphalt wearing surface on the timber deck so vehicles can cross with high velocity (>50 km/h). The application of the asphalt layer on the majority of the surface is usually unproblematic, but is challenging along the edges. Engineers and practitioners often find them-selves using their own creativity as constraints, geometry, and design of new timber bridges does not allow a direct copy of details of existing bridges. This paper presents base details along with recommendations listed by experienced timber bridge designers and experts from the field of detailing of concrete bridges. Furthermore, the advantages and disadvantages of existing details are discussed, and new details are pre-sented. This forms a basis for new bridge designs, as the details from a basis for economic and robust construction of timber bridges and, hence, increases their longevity.