Project for the design and construction of the bypass ring to the east of the city of Bratislava (D4), connecting the main existing roads and a new radial roadway (R7).
D4R7 will held redirect traffic to Austria and Hungary that currently travels on the D1 through urban areas. The design includes construction of a new highway, the 27-kilometer D4 with two lanes each way. It goes around Bratislava and features 9 junctions and 58 structures, including a viaduct that is 3 km long, 35 m wide, and has a maximum span of 210 m.
It also includes construction of a new radial highway, the 32-kilometer R7 which has two to three lanes each way. It goes southeast from the city center and has 5 junctions and 49 structures. 32 km of a two-way, two-lane road between Bratislava (Prievoz) and Holice.
The D4/R7 highway will provide relief for the daily urban traffic in the city of Bratislava. In 2020, light traffic is expected to go down by 15%, and heavy traffic by 50%.
Construction on the project is currently underway in 5 sections:
- Section of the D4 Highway. Jarovce to Ivanka Sever. Two lanes each way, 22.6 km long, 45 bridges (including the new bridge over the Danube River) and 6 junctions.
- Section of the D4 Highway. Ivanka Sever to Rača. With two lanes in each direction and a 2-km stretch with 3 lanes each way, this segment is 4.4 km long. It has 12 bridges and 3 junctions.
- Section R7 Highway. From Bratislava Prievoz to Ketelec. A stretch with three lanes each way and a 900-m section with two lanes in each direction, for a total length 6.3 km for this section. It has 15 bridges and 3 junctions.
- Section. R7 Highway. From Ketelec to Dunajská Lužná. It has two lanes in each direction and is 8.4 km long, with 10 bridges and 2 .
- Section. R7 Highway. From Dunajská Lužná to Holice. A section with two lanes each way and a length of 17.4 km. This includes the construction of 12 bridges and 2 junctions.
This project will improve traffic conditions in the region, as well as on the long stretch between these neighboring countries, thereby improving opportunities for economic development and boosting employment and the local supply chain.