British Defence Intelligence Update Ukraine – 9 October 2022 - Kyiv Post

Early on 08 October 2022, an explosion damaged the Kerch Strait Bridge, the road and rail crossing which links Russian-occupied Crimea and the Krasnodar region of Russia.
Two of the four carriageways of the roadway have collapsed in several places over a length of approximately 250m. It is almost certain that some vehicle transits via the other two carriageways have resumed, but capacity will be seriously degraded.
The extent of damage to the rail crossing is uncertain, but any serious disruption to its capacity will highly likely have a significant impact on Russia’s already strained ability to sustain its forces in southern Ukraine. The rail crossing was only opened to freight in June 2020, but the line has played a key role in moving heavy military vehicles to the southern front during the invasion.
This incident will likely touch President Putin closely; it came hours after his 70th birthday, he personally sponsored and opened the bridge, and its construction contractor was his childhood friend, Arkady Rotenberg. In recent months, Putin’s former bodyguard, now commander of the Russian National Guard, Viktor Zolatov, has provided public assurances about the security of the bridge.