skip to main page content :: Town & Regional Planning Home > Glossary Home > B >


The third river arch, note the plastic pipe (detail) for discharging rainwater. The bridge arches do not have obvious keystones, in contrast to the nearby Dry Bridge with it's key blocked semi-circular arch, by Playfair 1832 (illustration), (detail of Playfair keystone). bridge illustration
- see bridge case study.