Secondary State Highway 1F
There were two secondary state highways in Washington numbered 1F:
- Secondary State Highway 1F (Washington 1937-1961), now SR 20 between Burlington and Sedro-Woolley
- Secondary State Highway 1F (Washington 1967-1970), now part of SR 11 in Bellingham
This disambiguation page lists articles associated with the title Secondary State Highway 1F.
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