Great Northern Engineering Drawing: Prestressed T Girder, Bridge 49 - McElroy Slough, north of Blanchard, Washington, Line Segment 050, Milepost 82.3. Sheet 289 - 8754, undated.

Great Northern Engineering Drawing: Prestressed Pile, Bridge 49 - McElroy Slough, north of Blanchard, Washington, Line Segment 050, Milepost 82.3. Sheet 289 - 8754, undated.

Great Northern Engineering Drawing: Precast Concrete Details, Bridge 49 - McElroy Slough, north of Blanchard, Washington, Line Segment 050, Milepost 82.3. Sheet 289 - 8754 - 2, undated.

Great Northern Engineering Drawing: Field Erection Detail, Bridge 49 - McElroy Slough, north of Blanchard, Washington, Line Segment 050, Milepost 82.3. Sheet 289 - 8754 - 3, undated.