Chicago, Milwaukee, St. Paul and Pacific Railroad Company Historic District
Chicago, Milwaukee, St. Paul and Pacific Railroad Company Historic District, Railroad Historic District in Bitterroot Mountains, Idaho.
The district spans 14.5 miles through mountainous terrain, featuring 14 tunnels and 26 bridges along the former Milwaukee Road railway route.
Construction of the Pacific Extension began in 1906 when the Chicago, Milwaukee, St. Paul and Pacific Railroad expanded its network to compete with other railroads.
The St. Paul Pass route selection centered on the presence of white pine timber resources and the absence of competing railroad lines in the region.
The former railway corridor now functions as the Route of the Hiawatha Trail, offering opportunities for cycling and outdoor recreation through mountain passages.
Engineers installed electric power substations at East Portal and Avery in 1914, with catenary lines supporting train operations until their discontinuation in 1974.
Location: Idaho
GPS coordinates: 47.36278,-115.65833
Latest update: March 14, 2025 17:08
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