This had a profound impact. The amount of steel needed to build suspension bridges could be hundreds of tons less than required by previous design practice. Less steel greatly reduced the cost of a bridge. By the late 1920s and into the 1930s great long-span suspension bridges were being built across the country.
Waltham, Massachusetts. Waltham (/ËwÉËlËÎ¸Ã¦m/) is a city in Middlesex County, Massachusetts, United States, and was an early center for the labor movement as well as a major contributor to the American Industrial Revolution.
Old Suffolk County Courthouse 1810-1841. The county was created by the Massachusetts General Court on May 10, 1643, when it was ordered that the whole plantation within this jurisdiction be divided into four shires . Suffolk initially contained Boston, Roxbury, Dorchester, Dedham, Braintree, Weymouth, and Hingham.