Track work in 2018–19, which included replacement of platform edges at several stops, triggered requirements for accessibility modifications at those stops.[2] Design work for Tappan Street and seven other C Branch stations was 15% complete by December 2022.[3] Designs shown in February 2024 called for the Tappan Street platforms to be widened and rebuilt at their current locations.[4] In May 2024, the Federal Transit Administration awarded the MBTA $67 million to construct accessible platforms at 14 B and C branch stops including Tappan Street.[5] As of June 2024[update], construction is expected to be complete in fall 2026.[6]