Construction of 91 stream crossings in Ankara's Çamlıdere, Kahramankazan, Kızılcahamam, Kalecik, Çubuk, Çankaya, Mamak, Yenimahalle, Elmadağ, Akyurt, Altındağ, Şereflikoçhisar, Polatlı, Haymana, Gölbaşı, and Bala districts continues at full speed.