Overview of the Intermodal Railyards

The Twin Falls Rail Terminal, operated by Eastern Idaho Railroad (EIRR), anchors the city’s rail infrastructure with a 74.5-mile subdivision, a central yard, and direct interchange with Union Pacific at Minidoka, supporting bulk and agricultural shipments.

Twin Falls features a dedicated transload and intermodal facility managed by EIRR, enabling efficient transfer of potatoes, grains, and food products between railcars and trucks, with capacity for high-cube and bulk shipments to regional processors and national markets.
Market Size and Economic Impact
Twin Falls’ rail network moves over 2 million tons of freight annually, primarily agricultural commodities, supporting more than 1,200 direct and indirect jobs. The rail sector contributes over $150 million to the Magic Valley economy, ranking among Idaho’s top three rail freight hubs.
Competitive Landscape
- Eastern Idaho Railroad: Operates 365 miles, including Twin Falls Yard, with direct UP interchange at Minidoka and Idaho Falls
- Union Pacific: Provides Class I connectivity for outbound bulk, food, and agricultural shipments to West Coast and Midwest markets
- Regional Transloaders: Local operators offer specialized bulk and containerized transloading for food processors and agri-businesses
Opportunities
- Food Processing Expansion: Growth in potato and dairy processing drives increased outbound rail shipments and new facility investments
- Intermodal Potential: Regional demand for containerized exports supports future intermodal service development in Twin Falls
- Agri-Business Clusters: Concentration of food processors and cold storage facilities creates opportunities for rail-served industrial parks
Challenges
- Limited Intermodal Service: Absence of direct container service restricts access to global export markets for local shippers
- Infrastructure Age: Legacy yard and track infrastructure require upgrades to support heavier axle loads and modern equipment
- Seasonal Volume Swings: Harvest-driven peaks in agricultural shipments challenge yard capacity and scheduling flexibility
Trade and Logistics Trends
- Potato Shipments: Twin Falls remains Idaho’s leading rail origin for processed potato products and fresh shipments
- Grain Exports: Steady outbound grain volumes support regional elevators and food processors
- Dairy Logistics: Growth in dairy production drives inbound feed and outbound finished product rail movements
Future Outlook
- Yard Modernization: Planned upgrades to Twin Falls Yard will increase capacity and support heavier railcars and longer trains
- Intermodal Feasibility: Ongoing studies evaluate demand for direct container service to West Coast ports
- Industrial Park Growth: New rail-served industrial parks are attracting food processors and logistics providers
Recommendations
- Yard Expansion: Invest in additional track and siding capacity to accommodate peak harvest volumes and future growth
- Intermodal Partnerships: Collaborate with Union Pacific and regional shippers to pilot container-on-flatcar service
- Infrastructure Renewal: Prioritize replacement of legacy track and yard assets to improve reliability and safety
Twin Falls, ID
Twin Falls anchors southern Idaho’s rail network, connecting the Magic Valley’s 100,000+ population and food processing clusters to Union Pacific’s transcontinental routes, supporting regional trade with the Pacific Northwest, Midwest, and Southwest.
Strategically located at the heart of Idaho’s Magic Valley, Twin Falls connects regional food processors and agricultural producers to Union Pacific’s national network, linking the Pacific Northwest, Midwest, and Gulf Coast export corridors.
Where you'll go
Things to know
Rail Operations
Railroad Arrival: Twin Falls became a rail hub in 1909 with the completion of the Twin Falls Branch, spurring agricultural growth
Facilities & Services
Snake River Location: The city’s proximity to the Snake River Canyon enabled irrigation, transforming the region into a top potato producer
Location Benefits
Food Processing Center: Home to major potato, dairy, and grain processors, Twin Falls drives Idaho’s $8 billion agri-food economy
Additional Information
Innovation Corridor: Partnerships with the College of Southern Idaho foster workforce training and logistics innovation for rail-served industries