Versions of Washington Code 43.21C.470 - Categorical exemption for structurally deficient bridges -- Definition on LawServer 2023 Washington Code 43.21C.470 – Categorical exemption for structurally deficient bridges — Definition 2022 Washington Code 43.21C.470 – Categorical exemption for structurally deficient bridges–Definition 2020 Washington Code 43.21C.470 – Categorical exemption for structurally deficient bridges — Definition 2019 Washington Code 43.21C.470 – Categorical exemption for structurally deficient bridges — Definition 2018 Washington Code 43.21C.470 – Categorical exemption for structurally deficient bridges — Definition