Satellite images appear to show pontoons being used to replace destroyed bridges in the Kursk region.
Amid Ukraine's unexpected lightning incursion into Russia, launched on 6 August, Kyiv has struck three bridges in the now contested region since Friday.
Satellite images by Planet Labs, analysed by The Associated Press, show what appear to be pontoon bridges in two different positions along the Seim River.
The first bridge appeared between the town of Glushkovo and Zvannoe on Saturday, only to be gone in images taken yesterday.
