Burlington Northern Engineering Drawing: General Plan, Bridge 11.1 - Mercer Slough (formerly Northern Pacific), south of Wilburton, Washington, Line Segment 405, Milepost 11.5. Sheet VF 1264 - 16, 1970.

Burlington Northern Engineering Drawing: General Plan, Bridge 11.72 - Lake Hills Boulevard (formerly Northern Pacific), south of Wilburton, Washington, Line Segment 405, Milepost 11.7. Sheet 292 - 6678 - 2, 1970. Note: Steel span

Northern Pacific GP9 and a FB Unit diesel leads scheduled freight number 931 across the high trestle at Wilburton, Washington, just south of Bellevue, on February 11, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Northern Pacific 557, a GP7, leads the Arlington Local east (railroad south) across the Wilburton Trestle near Bellevue, Washington, in 1952. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Northern Pacific Engineering Drawing: Abutment 1 Details, Bridge 11.72 - Lake Hills Boulevard, south of Wilburton, Washington, Line Segment 405, Milepost 11.7. Sheet 292 - 6678 - 4, undated.

Northern Pacific Engineering Drawing: Abutment Number 1, Bridge 9.46 - I-90, south of Wilburton, Washington, Line Segment 405, Milepost 9.9. Sheet 1282 - 5, undated.