Wood as a building material of bridges has many advantages, especially considering the important ecological aspects. Wood is a renewable natural resource and the energy content of a finished structure is low.  A wood bridge is an attractive and aesthetical alternative when adapting a bridge into a landscape. In an era when space-age materials are as ubiquitous as the cell phone and laptop computer, a new-old building technique is spanning the gap between nostalgia and the modern-day demand for high performance. Wood bridges are making a comeback. Wood bridges are not new, although their design and manufacture have gone high tech.