Complex sentence: Construction started in January 2017, and is expected to be completed in 2020, which is coincidentally the year the Edmonton LRT Valley Line south portion opens, which will have access to the library from 102 Ave at Churchill station.
Split into simpler sentences: Construction started in January 2017, and is expected to be completed in 2020. Thelibrary will have access to the south portion of the LRT Valley Line, also scheduled to be completed in 2020, from 102 Ave at Churchill station.