Burlington Northern Engineering Drawing: Deck Details and Bill of Material, Bridge 11 - Steamboat Slough (formerly Great Northern), north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 61, 1985.

Burlington Northern Engineering Drawing: Deck Plan, Bridge 10 - Snohomish River (formerly Great Northern), north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - S1, 1985.

Burlington Northern Engineering Drawing: Deck Plan, Bridge 11 - Steamboat Slough (formerly Great Northern), north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 60, 1985.

Great Northern Engineering Drawing: 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 71, undated.

Great Northern Engineering Drawing: 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 73, undated.

Great Northern Engineering Drawing: 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 75, undated.

Great Northern Engineering Drawing: 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 78, undated.

Great Northern Engineering Drawing: 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 72, undated.

Great Northern Engineering Drawing: 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 74, undated.