Constitution Avenue is a major east–west street in the northwest and northeast quadrants of the city of Washington, D.C., in the United States. NCDOL requires all businesses in North Carolina to post a copy of the Wage and Hour Notice to Employees and the OSH Notice to Employees.Photo, Print, Drawing Constitution Avenue, N.W. in Washington, D.C. The triangular Apex Building was completed in 1938. Use the addresses listed below. At headquarters, we use one address for all regular mail and specific building addresses for packages. Enter or exit from Constitution Avenue, 4th Street, or Madison Drive on the National Mall. The 7th Street entrance is temporarily closed. The 2024 Paving Plan is published on the PaveDC website at the start of the construction season. 3 beds, 2 baths, 2182 sq. ft. Browse through the works from our collection on display in the West Building, East Building, and Sculpture Garden.