Green Line LRT construction delayed until at least 2022 The City of Calgary has announced construction on the Green Line LRT project will be delayed until at least next year. Social Sharing CBC News · Posted: Mar 31, 2021 4:08 PM MT | Last Updated: April 1 An artist's rendering of a ground-level station on the new Green Line LRT. City officials have confirmed that construction on the first portion of the Green Line will not start this year.(City of Calgary)