Great Northern Engineering Drawing: Shop Plan - General Drawing, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449, undated.

Great Northern Engineering Drawing: Shop Plan - General Arrangement, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 309, undated.

Great Northern Engineering Drawing: Shop Plan - Frames and Channel, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 225, undated.

Great Northern Engineering Drawing: Shop Plan - Frame Overhead F2, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 223, undated.

Great Northern Engineering Drawing: Shop Plan - Frame Overhead F1, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 222, undated.

Great Northern Engineering Drawing: Shop Plan - Floor Plates, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 423, undated.

Great Northern Engineering Drawing: Shop Plan - Fixed End Truss, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 118, undated.

Great Northern Engineering Drawing: Shop Plan - Fixed End Movement, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 117, undated.

Great Northern Engineering Drawing: Shop Plan - Field Work, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 416, undated.