Great Northern Engineering Drawing: Shop Plan - Bracing, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 419, undated.

Great Northern Engineering Drawing: Shop Plan - Bracing, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 430, undated.

Great Northern Engineering Drawing: Shop Plan - Bridge Number 4, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 134A, undated.

Great Northern Engineering Drawing: Shop Plan - Buffer Cylinder, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 329, undated.

Great Northern Engineering Drawing: Shop Plan - Center Girder Calculations, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 143, undated.

Great Northern Engineering Drawing: Shop Plan - Centerline Diagonal, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 144A, undated.

Great Northern Engineering Drawing: Shop Plan - Concrete Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 125, undated.

Great Northern Engineering Drawing: Shop Plan - Concrete Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 409, undated.

Great Northern Engineering Drawing: Shop Plan - Counterweight Angle, Bridge 4 - Salmon Bay, Ballard, Washington, Line Segment 050, Milepost 6.3. Sheet 198 - 2449 - 251, undated.

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