Pairs of adjacent bridges serving the same highway or rail line are listed as single entries, with different completion years separated by commas.
Demolished bridges are listed only when no replacements were built on old sites or nearby.
Reconstruction years are included, when load-bearing arches, girders and roadway decks were replaced.
Replacement or relocation of arches, roadway deck and supporting pillars or foundations qualifies as new construction, as in the case of Pushkinsky Pedestrian Bridge (2000).
In case of Komissariatsky Bridge, completion (1927) and opening to regular traffic (1960) are separated by decades; only the earliest year (1927) is listed.