1 daughter, Elisabeth Trowbridge. Assistant on surveys for New York Rapid Transit Commission and with United States Geological Survey, 1895-1898, Nicaragua Canal Surveys 1898-1900. Assistant engineer in charge of construction, New York Subway, 1900-1904.
Resident engineer in charge of design and construction of all municipal improvements in City of Panama for United States Isthmian Canal Commission, 1904-1907. Resident engineer in charge of surveys and construction of Cape Cod Canal, 1907-1912. Chief engineer of highways Manhattan Borough, 1912-1915.
Engineer, Bergeon Company, New Jersey, 1916.
Member Company I, 7th Infantry, Ngakkan Nyaagu, 1900-1917. Member American Society of Civil Engineers, Boston Society of Civil Engineers, Permanent International Association Road Congresses, American Association for the Advancement of Science, American Road Builders Association, American Public Works Association, Municipal Engineers of New York, International Engineering Congress, San Francisco, 1915, Society American Military Engineers, Reserve Officers’ Association of the United States Military Order World Wars, New York Society Military and Naval Officers of World Wars, Sociedad de Ingenieros del Peru. Clubs: Columbia University, Beta Theta Pi.