Bridgetown is the capital and commercial centre and has a population of about 80 000. Bridgetown was originally named "Indian Bridge" for the rude bridge which had been constructed over the river (now known as the Careenage) by the Indians. It was later called the "town of St. Michael" in official documents, before finally being named Bridgetown. The Chamberlain Bridge was erected in 1872 and was a swing bridge operated by two persons, allowing entry into the inner basin of the Careenage. In 2006 the Chamberlain Bridge was replaced with a modern lift bridge. In previous times, the careenage was an important hub of activity for inter-island trading vessels. Nowadays the careenage is mainly utilized by pleasure craft (catamarans, yachts, fishing boats, etc).