Burlington Northern Engineering Drawing: Deck Plan, Bridge 55 - Trout Creek (formerly Northern Pacific), west of Trout Creek, Montana, Line Segment 044, Milepost 55.1. Sheet 1281 - 2, 1976.

Northern Pacific Engineering Drawing: 30 Foot Beam Spans, Bridge 55 - Trout Creek, west of Trout Creek, Montana, Line Segment 044, Milepost 55.1, undated.

Northern Pacific Engineering Drawing: Abutment 1/Log Borings, Bridge 57 - Clark Fork River, Trout Creek, Montana, Line Segment 044, Milepost 57.1. Sheet 1060 - 48, undated.

Northern Pacific Engineering Drawing: Anchor Bolt Plan/Support, Bridge 57 - Clark Fork River, Trout Creek, Montana, Line Segment 044, Milepost 57.1. Sheet 1060 - 48, undated.

Northern Pacific Engineering Drawing: Approved Span Bottom Both Ends, Bridge 55 - Trout Creek, west of Trout Creek, Montana, Line Segment 044, Milepost 55.1. Sheet 1281 - 2, undated.

Northern Pacific Engineering Drawing: Bar List, Bridge 57 - Clark Fork River, Trout Creek, Montana, Line Segment 044, Milepost 57.1. Sheet 1060 - 48, undated.

Northern Pacific Engineering Drawing: Bar List/Miscellaneous Details, Bridge 55 - Trout Creek, west of Trout Creek, Montana, Line Segment 044, Milepost 55.1. Sheet 1281 - 2, undated.

Northern Pacific Engineering Drawing: Bar Type/Dimension, etc., Bridge 57 - Clark Fork River, Trout Creek, Montana, Line Segment 044, Milepost 57.1. Sheet 1060 - 48, undated.