Great Northern Engineering Drawing: 120 Foot Truss Reinforcement, Bridge 15 - Kochs Slough, south of English, Washington, Line Segment 050, Milepost 49.5. Sheet 202 - 1723 - 15, undated.

Great Northern Engineering Drawing: Deck Plan, Bridge 14 - south Slough, south of English, Washington, Line Segment 050, Milepost 49.2. Sheet 200 - 2183 - 23, 1949.

Great Northern Engineering Drawing: Deck Plan, Bridge 15 - Kochs Slough, south of English, Washington, Line Segment 050, Milepost 49.5. Sheet 202 - 1723 - 16, 1944.

Great Northern Engineering Drawing: Deck Plan, Bridge 15 - Kochs Slough, south of English, Washington, Line Segment 050, Milepost 49.5. Sheet 202 - 1723 - 24, 1958.

Great Northern Engineering Drawing: General and Masonry Plans, Bridge 14 - south Slough, south of English, Washington, Line Segment 050, Milepost 49.2. Sheet 200 - 2183 - 1, 1908. Note: Steel span 1908 - AFE 14545

Great Northern Engineering Drawing: Masonry Plan, Bridge 14 - south Slough, south of English, Washington, Line Segment 050, Milepost 49.2. Sheet 200 - 2183 - 2, undated.

Great Northern Engineering Drawing: Masonry Plan, Bridge 15 - Kochs Slough, south of English, Washington, Line Segment 050, Milepost 49.5. Sheet 202 - 1723 - 20, undated.

Great Northern Engineering Drawing: Pile Approaches, Bridge 14 - south Slough, south of English, Washington, Line Segment 050, Milepost 49.2. Sheet 200 - 2183 - 22, undated.