Puget Sound Bridge and Dredging Company Puget Sound Bridge and Dredging Company Puget Sound Bridge and Dredging Company was a major shipbuilding and construction company, located in Seattle, Washington. The firm was established in 1898 on Elliott Bay in Puget Sound. The company was engaged in construction projects around the United States and built ships for the U.S. Navy at its shipyard on Harbor Island on Puget Sound during and after World War II. In 1959 the firm was purchased by Lockheed and became the Lockheed Shipbuilding and Construction Company. The shipyard was permanently closed in 1987. During its 61-year history as Puget Sound Bridge and
Puget Sound melting retreat of the Vashon Glaciation eroded the land, creating a drumlin field of hundreds of aligned drumlin hills. Lake Washington and Lake Sammamish (which are ribbon lakes), Hood Canal, and the main Puget Sound basin were altered by glacial forces. These glacial forces are not specifically "carving", as in cutting into the landscape via the mechanics of ice/glaciers, but rather eroding the landscape from melt water of the Vashon Glacier creating the drumlin field. As the ice retreated, vast amounts of glacial till were deposited throughout the Puget Sound region. The soils of the region, less than ten thousand