Traffic was smooth again on Russia's only bridge to Crimea hours after a massive explosion partially destroyed a road.

The explosion on Europe's longest bridge - a symbol of Russia's annexation of the peninsula from Ukraine in 2014 - killed three people, investigators said.

The victims were in a nearby car when a truck exploded, Russian officials said.

The railroad section of the bridge - where the oil tanker caught fire - also appears to have reopened.

On Saturday evening, the Russian Foreign Ministry released a video showing a car using a bridge.

An adviser to Ukrainian President Volodymyr Zelenskyy, Mykhailo Podolyak, did not identify himself directly with Ukraine, but wrote: “Crimea, bridge, early.

The Ukrainian Ministry of Defense compared the bridge explosion to the sinking of the Russian missile cruiser Moskva in April.

"Two famous symbols of Russian power in Ukrainian Crimea have fallen," he tweeted. "What's next?"