Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Bridge E83.2 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 83.21. Sheet WX - 183, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Bridge E83.6 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 83.56. Sheet WX - 197, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E80.1 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 80.09. Sheet SS - 447, 1950.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E81.4 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 81.41. Sheet SS - 639, 1957.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E83.2 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 83.21. Sheet SS - 442, 1950.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E83.6 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 83.56. Sheet WW - 107, 1951.

Spokane, Portland and Seattle Railway Engineering Drawing: Topo Vicinity of Map, Bridge E81.4 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 81.41. Sheet S - 1 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: west Flange Deck Girder, Bridge E81.4 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 81.41, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: west Flange Deck Girder, Bridge E81.4 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 81.41, undated.