Northern Pacific Engineering Drawing: General Plan, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 19.3. Sheet 441 - 14, 1898. Note: Steel spans
Northern Pacific Engineering Drawing: General Plan, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 19.3. Sheet 441 - 14, 1898. Note: Steel spans
Northern Pacific Engineering Drawing: General Plan, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 79.3. Sheet 441 - 14, undated.
Northern Pacific Engineering Drawing: General Plan/Mason Change, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 79.3. Sheet 441 - 14, undated.
Northern Pacific Engineering Drawing: General/Masonry Plan, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 79.3. Sheet 441 - 14, undated.
Northern Pacific Engineering Drawing: Lateral/Cross Frames, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 79.3. Sheet 441 - 14, undated.
Northern Pacific Engineering Drawing: Piers/Abutments, Bridge 79 (112) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 79.3. Sheet 441 - 14, undated.
Northern Pacific Engineering Drawing: Piers/Abutments, Bridge 79 (12) - Big Boulder River, west of Greycliff, Montana, Line Segment 041, Milepost 79.3. Sheet 441 - 14, undated.
Northern Pacific Engineering Drawing: Plan of Piers/Abutment, Bridge 74 (108), west of Greycliff, Montana, Line Segment 041, Milepost 74.5. Sheet 441 - 11, 1901. Note: Steel spans
Northern Pacific Engineering Drawing: Plan of Piers/Abutment, Bridge 74 (108}, west of Greycliff, Montana, Line Segment 041, Milepost 74.5. Sheet 441 - 11, undated.
Northern Pacific Engineering Drawing: Precast Concrete Cap, Bridge 71, west of Greycliff, Montana, Line Segment 041, Milepost 71.7. Sheet 441 - 3, undated.