The Canton Viaduct in Canton, Mass., built in 1835 and in continuous service ever since, is the second-oldest multiple-arch masonry viaduct in the country. Serious deterioration had slowed the movement of trains over the viaduct and threatened the viability of the historic structure. A fast-track restoration that included arch replacements and a new, independent superstructure has helped save it from further deterioration and ensure its place along Amtrak's upcoming highspeed rail line through the Northeast.
展开▼
