Northern Pacific Engineering Drawing: Detail for Widen Bridge, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Masonry Plan, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Method of Increasing Superelevation, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Proposed Super Elevation, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Replace Top Lateral System, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Bolster, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Bolster, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Deck Plate Girder (DPG) Spans, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.