Platov International Airport in Rostov-on-Don was upgraded with automated air traffic control systems, modern surveillance, navigation, communication, control, and meteorological support systems. Koltsovo Airport in Yekaterinburg was upgraded with radio-engineering tools for flight operation and received its second runway strip. Saransk Airport received a new navigation system; the city also got two new hotels, Mercure Saransk Centre and Four Points by Sheraton Saransk as well as few other smaller accommodation facilities.  In Samara, new tram lines were laid. Khrabrovo Airport in Kaliningrad was upgraded with radio navigation and weather equipment.  Renovation and upgrade of radio-engineering tools for flight operation was completed in the airports of Moscow, Saint Petersburg, Volgograd, Samara, Yekaterinburg, Kazan and Sochi.  On 27 March, the Ministry of Construction Industry, Housing and Utilities Sector of Russia reported that all communications within its area of responsibility have been commissioned. The last facility commissioned was a waste treatment station in Volgograd. In Yekaterinburg, where four matches are hosted, hosting costs increased to over 7. 4 billion rubles, over-running the 5. 6 billion rubles originally allocated from the state and regional budget.