Great Northern Engineering Drawing: Diagram Electrical Connections, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 332, undated.
Great Northern Engineering Drawing: Diagram Electrical Connections, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 332, undated.
Great Northern Engineering Drawing: Encase - Brackets 2 and 3, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 473, 1949.
Great Northern Engineering Drawing: Encase Brackets 17 and 18, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 402, undated.
Great Northern Engineering Drawing: End Lock Circuit Control, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 381, undated.
Great Northern Engineering Drawing: Fender - Pier Number 7, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 98, undated.
Great Northern Engineering Drawing: Friction Block - Gas Engine, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 389, undated.
Great Northern Engineering Drawing: Gas Engine Pipe Connections, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 339, undated.
Great Northern Engineering Drawing: General Details, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 11, undated.
Great Northern Engineering Drawing: General Plan - Bridge Number 4, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 3, 1912. Note: Built 1914 - AFE 24940
Great Northern Engineering Drawing: General Plan - Middle Section, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 4, 1912. Note: Middle section 1914