All Employees: Construction: Heavy and Civil Engineering Construction in Montana was 5.60000 Thous. of Persons in January of 2020, according to the United States Federal Reserve. Historically, All Employees: Construction: Heavy and Civil Engineering Construction in Montana reached a record high of 5.90000 in January of 2007 and a record low of 3.20000 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Construction: Heavy and Civil Engineering Construction in Montana - last updated from the United States Federal Reserve on March of 2024.