Burlington Northern Engineering Drawing: Repairs Operating Strut, Bridge 4 - Salmon Bay (formerly Great Northern), Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 165A, 1973.

Great Northern Engineering Drawing: 13 Pile Dolphin, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 483, undated.

Great Northern Engineering Drawing: 34 Foot Steel Span, Bridge 5 - 61st Street, east of Ballard, Washington, Line Segment 050, Milepost 6.8. Sheet 273 - 4627 - 2B, undated.

Great Northern Engineering Drawing: Air Pipe and Conduit, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 199 - 2449 - 335, undated.

Great Northern Engineering Drawing: Bearing and Diaphragm, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 382, undated.

Great Northern Engineering Drawing: Bill of Material - Miscellaneous Details, Bridge 5 - 61st Street, east of Ballard, Washington, Line Segment 050, Milepost 6.8. Sheet 273 - 4627 - 21, undated.

Great Northern Engineering Drawing: Bridge Number 17 Map, Bridge 17 - Stillaguamish River, east of Ballard, Washington, Line Segment 050, Milepost 50.5. Sheet 197 - 1322 - 1, undated.

Great Northern Engineering Drawing: Bridge Number 4 - Section, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 21, undated.