Northern Pacific Engineering Drawing: Precast Concrete Details, Bridge 93.2 - west Stock Road, south of Castle Rock, Washington, Line Segment 052, Milepost 93.5. Sheet 390 - 8496 - 3, undated.

Northern Pacific Engineering Drawing: Proposed Abutment Number 4, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 1268 - 13, undated.

Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6, undated.

Northern Pacific Engineering Drawing: Shop Plan - Cross Frame/Lateral, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 785 - 18, undated.

Northern Pacific Engineering Drawing: Shop Plan - Deck Girder Span, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 1268 - 13, undated.

Northern Pacific Engineering Drawing: Shop Plan - Deck Girder Span, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 1268 - 13, undated.

Northern Pacific Engineering Drawing: Shop Plan - Deck Girder Span, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 1268 - 13, undated.

Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 1268 - 13, undated.

Northern Pacific Engineering Drawing: Shop Plan - Diagonal/Anchor, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 785 - 18, undated.

Northern Pacific Engineering Drawing: Shop Plan - Framing Plan, Bridge 93.3 - Ostrander Creek, south of Castle Rock, Washington, Line Segment 052, Milepost 93.6. Sheet 1268 - 13, undated.