Kaluga South Bypass with a bridge over the Oka River

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Kaluga Region (new construction)
Detailed design
Project period: 2015 – 2018
General Designer: Institute Stroyproekt
Client: Ministry of Roads of Kaluga Region, GKU Kalugadorzakazchik

Kaluga South Bypass with a bridge over the Oka River connects three federal highways: the M-3 Ukraine, R-132 Kaluga — Ryazan and R-92 Kaluga — Oryol. The new road allows diverting heavy vehicles to bypass the residential areas and reduces the traffic in the city. Driver’s comfort, speed and ecology — this is the new federal motor road as described by the Minister of Transport of the Russian Federation.

Technical parameters

Length — 21.2 km

Lanes — 4

Design speed — 120 km/h

Category — IB

Interchanges — 4

Overpasses — 8

Length of the bridge over the Oka River — 649 m

River span layout, m: 60.5+3×84+72+60.5

Project stages

• Construction of the bypass road

• Construction of three new interchanges and rehabilitation of the existing one

• Construction of eight overpasses, including two overpasses at intersection with regional roads

• Construction of the bridge over the Oka River. The right-side flyover is made of 8x24 m precast beams. The river span installed by launching is a box steel girder with an orthotropic carriageway plate

Main features

The bridge is located within a flood-prone area, so a 15m-high embankment with concrete slope protection was filled at both banks and diversion dikes were constructed.