Voroshilovsky Bridge, Bridge in Rostov-on-Don, Russia

Voroshilovsky Bridge is a reinforced concrete crossing of the Don in Rostov-on-Don, carrying Voroshilovsky Avenue over the river toward Bataysk and Azov. Since its 2013–2017 rebuilding it consists of two parallel spans of three lanes each, 36 m wide with 3 m sidewalks, and the main navigable span was widened by removing the old mid-river piers. The deck runs low over the water on thick rectangular piers, with slender lampposts along the parapet.

Built between 1961 and 1965 to designs by engineer N. I. Kuznetsov and architect Sh. A. Kleiman, the bridge completed the post-war reconstruction of the Don embankment begun in 1947. Its concrete blocks, up to 30 tonnes each, were joined with glue rather than welding or bolts, a first in the USSR. A 2007 crack closed the span, and from 2013 to 2017 it was rebuilt as two parallel bridges carrying six lanes.

The bridge takes its name from Voroshilovsky Avenue, whose line it continues across the Don. During construction, planners discussed placing an obelisk on the span to mark the Europe–Asia border, since one version of that boundary follows the Don, but the project was never realised. Today the crossing carries traffic toward Bataisk and Azov.

The bridge carries three lanes in each direction, with 3-metre-wide sidewalks on both sides. Two lifts on each bank serve the pedestrian part, which is covered by translucent canopies. The main navigable span was enlarged during the 2013–2017 reconstruction, and the bridge deck stands 32 metres above the Don, so river vessels of all types pass beneath.

During construction, concrete blocks weighing up to 30 tonnes were fixed to the bridge's Π-shaped piers with glue made from bustilat, and steel cables were threaded through the hollow blocks to post-tension the span. No welded or bolted joints were used, a first in the USSR and, according to the Russian Wikipedia article, the first such use in the world.