Mogadishu underwent a period of infrastructural expansion in the late 1930s, with new buildings and avenues such as the "Arch of Triumph" erected in 1934. In 1936, the city had a population of 50,000 inhabitants of which 20,000 were Italian Somalis. The Italian settlers also connected the city to Jowhar with a 114 km railway and a newly asphalted Imperial Road leading toward to Addis Ababa. In the late 1930s was created the international airport Petrella with a huge enlargement of the port of Mogadishu.