BNSF - Pigeon Point Tunnel No. 18 [Map] Concrete lined tunnel under hillside on BNSF Railway, MP83.7, Bellingham SubdivisionOpen to trafficBuilt in 1902 as part of the Chuckanut cutoff between Burlington and Bellingham, WA. Concrete lined in 1912.
BNSF - Skagit River Bridge [Map · Street View] Warren through truss bridge over Skagit River on BNSF RailroadOpen to trafficBuilt 1906 by the Pennsylvania Steel Co. as swing bridge for the Great Northern Railway; fixed position since 1965
BR&S - Baker River Bridge [Map] Lost Timber stringer bridge over Baker River on Baker River & Shuksan RailroadRemoved but not replacedBuilt 1909; Removed Colony Creek Bridge [Map] Concrete tee beam bridge over BNSF Railway and Colony Creek on WA 11 (Chuckanut Drive)Open to trafficBuilt 1931
GN - Concrete Bridge [Map] Lost Pennsylvania through truss bridge over Baker River on Great Northern RailwayRemoved I-5 - Skagit River Bridge [Map · Street View] Through truss bridge over Skagit River on I-5 in Mount VernonOne span collapsed May 23, 2013, Reopened with temporary span June 19, 2013; temporary span replaced with a permanent span on 15 September, 2013 and now open to trafficBuilt 1955. One span collapsed May 23, 2013, Reopened with a temporary span on June 19, 2013, temporary span replaced on 15 September, 2013 and now open to traffic
Morris Street Bridge [Map] Lost Warren through swing truss bridge on Morris Street over Swinomish ChannelReplaced by a new bridge downstream
Old Highway 99 Bridge [Map] Lost Timber stringer bridge over BNSF RR on Old Highway 99 NorthReplaced by a new bridgeBuilt 1936
PNWTC - Skagit River Bridge [Map · Street View] Lost Pratt through truss drawridge over Skagit River on former Bellingham and Skagit Interurban RailwayOnly three piers remainBuilt 1912; Removed ca. 1930 after being condemned in 1928
Riverside Drive Bridge [Map] Swing bridge over Skagit River on Riverside Drive in Mount VernonReplaced by a pre-cast concrete girder bridge in 2004Built 1938, Replaced 2004
SLS&E - Skagit River Bridge [Map] Howe through truss bridge over Skagit River on Seattle Lakeshore & Eastern RailroadNo longer existsBuilt 1890 replaced Tommy Thompson Trail [Map] Bridge over Fidalgo Bay on TrailOpen and maintained as a pedestrian and bicycle trail for public use.Originally a railroad trestle bridge connecting the City of Anacortes with the mainland.