Complex sentence: The bridge provided for the passage of trains across the Belaya River in the direction of Ufa, and allowed for further construction of the main railway line up to Chelyabinsk (1892).
Split into simpler sentences: The bridge provided for the passage of trains across the Belaya River in the direction of Ufa. Moreover, it became possible to continue building the main railway line up to Chelyabinsk (1892).