Northern Pacific Engineering Drawing: 1 - 70 Foot and 2 - 80 Foot Deck Plate Girder (DPG), Bridge 78 - Olequa Creek, south of Vader, Washington, Line Segment 052, Milepost 78.4. Sheet 1256 - 6, undated.

Northern Pacific Engineering Drawing: 70 Foot and 80 Foot Girders, Bridge 78 - Olequa Creek, south of Vader, Washington, Line Segment 052, Milepost 78.4. Sheet 1256 - 6, undated.

Northern Pacific Engineering Drawing: 70 Foot Deck Girder, Bridge 78 - Olequa Creek, south of Vader, Washington, Line Segment 052, Milepost 78.4. Sheet 1256 - 6, undated.

Northern Pacific Engineering Drawing: Arrangement Deck Plate Girder (DPG), Bridge 81 - Cowlitz River, south of Vader, Washington, Line Segment 052, Milepost 81.5. Sheet 429 - 17, undated.

Northern Pacific Engineering Drawing: Bill/Bars and Notes, Bridge 78 - Olequa Creek, south of Vader, Washington, Line Segment 052, Milepost 78.4. Sheet 1256 - 6, undated.

Northern Pacific Engineering Drawing: Bottom Lateral, Bridge 84 - Toutle River, south of Vader, Washington, Line Segment 052, Milepost 84.9. Sheet 429 - 18, undated.