Burlington Northern Engineering Drawing: Deck Plan, Bridge 16.1 - Chehalis River (formerly Northern Pacific), near Dryad, Washington, Line Segment 420, Milepost 16.80. Sheet 1068 - 24, 1978.

Northern Pacific Engineering Drawing: Bill of Material, Bridge 16.1 - Chehalis River, Near Dryad, Washington, Line Segment 420, Milepost 16.80. Sheet 1068 - 24, undated.

Northern Pacific Engineering Drawing: Concrete Detail/Beam/Material, Bridge 21 - Highway, west of Dryad, Washington, Line Segment 420, Milepost 21.17. Sheet 1064 - 4, undated.

Northern Pacific Engineering Drawing: Detail of Structural Steel, Bridge 21 - Highway, west of Dryad, Washington, Line Segment 420, Milepost 21.17. Sheet 1064 - 4, undated.

Northern Pacific Engineering Drawing: Falsework Plan, Bridge 21 - Highway, west of Dryad, Washington, Line Segment 420, Milepost 21.17. Sheet 1064 - 4, undated.

Northern Pacific Engineering Drawing: Marking Diagram, Bridge 16.1 - Chehalis River, Near Dryad, Washington, Line Segment 420, Milepost 16.80, undated.

Northern Pacific Engineering Drawing: Raising Plan, Bridge 21 - Highway, west of Dryad, Washington, Line Segment 420, Milepost 21.17. Sheet 1064 - 4, undated.