[1] In May 2018, the regional government of the Omsk Oblast stopped construction after 26 years, leaving behind an unfinished system with only one station that serves as a pedestrian underpass, and a double-decker metro/road bridge over the Irtysh river.

In 1979, a Gosplan commission rejected a plan to build an express tram system since it was predicted to be unable to handle projected passenger flows without severely discomforting riders.

[3] Since 2014, construction on the system had stalled, but an 84.6 million Ruble contract was awarded to the Russian firm Sibmost to carry out detailed design studies on completing the 7.5-kilometer (4.7 mi) light metro line, from Biblioteka Pushkina to Prospekt Rokossovskogo, with five stations.

[4] On 9 September 2015, it was announced that the construction would continue, in view of the high cost of preserving and maintaining the core structural features of the metro.

[4] Construction delays have made the Omsk Metro a subject of humour in the city: Radio Free Europe/Radio Liberty and Yuri Litvinenko of Atlas Obscura have noted an unofficial map and mobile app that showed only one station (Pushkin Library), as well as souvenir fare tokens for the incomplete system.