Great Northern Engineering Drawing: Shop Plan - Trunnion End Moving Leaf, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 120, undated.

Great Northern Engineering Drawing: Shop Plan - Trunnion Pins, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 128, undated.

Great Northern Engineering Drawing: Shop Plan - Truss Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 426, undated.

Great Northern Engineering Drawing: Shop Plan - Truss Chord, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 427, undated.

Great Northern Engineering Drawing: Shop Plan - Truss Members, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 425, undated.

Great Northern Engineering Drawing: Shop Plan - Truss Members, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 424, undated.

Great Northern Engineering Drawing: Steel Details - Bridge Number 4, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 472, undated.

Great Northern Engineering Drawing: Steel Details - Bridge Number 4, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 471, undated.

Great Northern Engineering Drawing: Steel Layout, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 6, undated.

Great Northern Engineering Drawing: Steel Repairs, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 482, 1965.