Within the scope of the work, the implementation projects of the bridges at the junctions of K2-K3 and K4 and K5 and 3 bridges on the main road body are being prepared. Superstructures for bridges and viaducts are designed with a composite slab system formed by simply supported prestressed prefabricated reinforced concrete beams and cast-in-situ reinforced concrete slabs. The infrastructure system consists of cast-in-situ reinforced concrete columns, head beams and foundations. Among these bridges, the K2 Junction bridge has a 3x40m span on the right platform, 24+2x40m openings on the left platform, and the deck width is variable between 17.5m and 19.5m. The total length of the bridge is 107.15m on the left bridge and 124.69m on the right bridge. There are 2 viaducts at the junction of K3 and 3 viaducts on the main road. The connecting rod-3 bridge is in 8x35 opening layout and the deck width is 9.5m. The total length of the bridge is 294.70m. The connecting rod-4 bridge is in 2x30+35+30 opening layout and the deck width is 9.50 m. The total length of the bridge is 132.35m. Ihsaniye viaduct left carriageway 1 bridge located on the main road body is in a 6x35m span layout and the deck width is 17.0m. The total length of the bridge is 221.55 m. Ihsaniye viaduct left carriageway 2 bridge located on the main road body is in the 2x35+2x25+4x35m span layout and the deck width is 14.0m. The total length of the bridge is 276.15 m. The İhsaniye viaduct right hand carriageway bridge located on the main road body is 10x35+3x30+1x35m span layout and the deck width is 17.0m. The total length of the bridge is 502.07m. Taşbaca Viaduct left carriageway bridge located on the main road body is 4x30.5m wide and the deck width is 14.5m. The total length of the bridge is 128.66 m. Taşbaca Viaduct right carriageway bridge located on the main road body is 4x27.25m wide and the deck width is 14.5m. The total length of the bridge is 115.51 m. The Çatal Stream-1 bridge, located on the main road, is in a 2x40m span layout and the deck width is 2x14.5m. The total length of the bridge is 82.10 m. The Çatal Stream-2 bridge on the main road is 2x38.30m on the left and 2x40m on the right, and the deck width is 14.5m for the left and right bridges. The total length of the bridge is 79.65 m on the left bridge and 83.16 m on the right bridge. The Çatal Stream Bridge, located on the main road, is in a 1x38.30m span layout and the deck width is 2x14.5m. The total length of the bridge is 38.30 m. The K5 Junction u-turn bridge superstructure is designed with a cast-in-situ reinforced concrete slab on the pier and a monolithic interconnected column system. Reinforced concrete foundations were chosen with bored piles. The bridge is in 1x15+2x19+1x15m span layout and the deck width is 10.5m. The total length of the bridge is 68m.