Northern Pacific Engineering Drawing: General and Masonry Plan, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, 1928.
Northern Pacific Engineering Drawing: General and Masonry Plan, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, 1928.
Northern Pacific Engineering Drawing: Shop Plan - Floorbeam, Stringers, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, undated.
Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, undated.
Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, undated.
Northern Pacific Engineering Drawing: Tie Plan, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, undated.
Northern Pacific Engineering Drawing: Tie Plan, Bridge 30.1 - Boulder River, west of Lime Spur, Montana, Line Segment 326, Milepost 30.5. Sheet 1074 - 6, undated.