Repairs to the damaged bridge between annexed Crimea and southern Russia will be completed by July 2023, according to a document published on the Russian government website.
The Kerch Bridge, the longest in Europe, was damaged last week as a result of an explosion.
Russia has said three people were killed in the incident, which is believed to be the result of a truck explosion.
Some Ukrainian officials celebrated the incident on social media, but Kiev has not claimed responsibility.