The bridge was built in 1955 and has a sufficiency rating of 57.4 out of 100, according to federal records.
That is well below the statewide average rating of 80, according to an Associated Press analysis of federal data, but 759 bridges in the state have a lower sufficiency score.
According to a Skagit County Public Works Department report published last year, 42 of the county’s 108 bridges are 50 years or older.
The document says eight of the bridges are more than 70 years old and two are over 80.
Washington state was given a C in the American Society of Civil Engineers’ 2013 infrastructure report card and a C- when it came to the state’s bridges. The group said more than a quarter of Washington’s 7,840 bridges are considered structurally deficient or functionally obsolete.