Union Pacific Railroad diesel locomotive number 731 at Montesano, Washington on September 18, 1975. UP 731, running light over the truss bridge at Montesano in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, truss bridge.

Union Pacific Railroad diesel locomotive number 731 at Montesano, Washington on September 15, 1975. UP 731, a GP30, crosses a trestle near Montesano Washington in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, trestle bridge.

Plat Map of Northern Pacific facilities at Montesano, Washington, undated, Sheet Number 1, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, undated, Sheet Number 2, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, October 1, 1924, Sheet Number 3, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, October 1, 1924, Sheet Number 4, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, October 1, 1924, Sheet Number 2, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, October 1, 1924, Sheet Number 1, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, June 30, 1914, Sheet Number 2, Line Segment 402, showing the Saint Clair-Moclips line.

Plat Map of Northern Pacific facilities at Montesano, Washington, June 30, 1914, Sheet Number 1, Line Segment 402, showing the Saint Clair-Moclips line.