Holiday closure Monday May 28: Most county offices will be closed in observance of Memorial Day.
King County Archives
1215 E. Fir St.
Building A
Seattle, WA 98122

206-296-1538
archives@kingcounty.gov

Monday - Friday
9:00 am - 4:00 pm

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Roads, Trails and Utilities

Holdings of the King County Archives include graphical materials which provide locations or construction details of infrastructure such as roads, bridges, wharves and ferry landings, mainline and logging railroads, and streetcar rights-of-way; hiking, pedestrian and equestrian trails; fire, sewer and water districts; electricity transmission lines, and sewer system maps. Maps and plans can be either generated by King County agencies or acquired by them (for example, from railway companies or from housing developers).

Please contact the Archives with questions, or to schedule a viewing appointment.

200tolt_pipeline_trail Map of Tolt Pipeline Trail printed in King County Parks brochure, approximately 1974
200bridge3036 Design drawing for three-arch concrete highway bridge (#3036) over the Green River at Kanaskat, 1915
200railroad_franchise Electricity transmission tower, Milwaukee Road railroad, 1915. These company records are part of the railroad's franchise application to run power lines for their electrified trains on King County right-of-way