 His thirty-six years of service in the Department of Bridges, and its successor, the Department of Plant and Structures, may be divided into two periods.During this period, he was in charge of bridge construction and maintenance, supervising the construction of the Willis Avenue Bridge over the Harlem River, the Vernon Avenue Bridge, the Borden Avenue and Hunters Point Bridges over Dutch Kills, and the old bridge over Flushing River.The second period began with his assumption of the office of Deputy Chief Engineer in 1912, followed by his appointment as Chief Engineer in 1915.