The Riley Creek Slough Bridge on Tualco Rd. will be replaced in 2019 or 2020.
http://www.heraldnet.com/news/rural-bridge-in-farmland-near-monroe-to-be-replaced/
(The list of deficient bridges in Snohomish County includes the Swamp creek bridge on Locust Way and a couple of bridges we know on the Mountain Loop Highway out of Granite Falls.)