A City Built on Rail
San Bernardino history is inseparable from the railroad. The arrival of transcontinental rail service in the late nineteenth century turned a modest agricultural settlement into a major junction, and the city famous railroad depot stands today as a restored landmark and active transit hub. That heritage is not merely nostalgic. The same corridors that carried citrus east now carry intermodal containers from the San Pedro Bay ports toward Chicago and beyond, while commuter trains move tens of thousands of Southern California residents each week.
For businesses and commuters alike, understanding who operates on these lines is genuinely useful. Freight shippers need to know which Class I railroad serves a given industrial park. Commuters need to know which agency runs the service and how it connects to buses and regional rail. Developers evaluating industrial land need to understand rail served siding availability. The operators below cover all of those needs.
The Ten Leading Railway Operators and Rail Service Providers
1. BNSF Railway. BNSF is the dominant freight presence in the region, with its transcontinental corridor running through San Bernardino and a major intermodal footprint nearby. Its double track and improved signaling investments have increased throughput for container traffic moving from the ports to inland markets. For importers, BNSF intermodal service is frequently the lowest cost long haul option.
2. Union Pacific Railroad. Union Pacific operates the other half of the western freight duopoly and serves the Inland Empire through nearby yards and industrial leads. Shippers value its extensive carload network for bulk commodities, building materials and automotive traffic, alongside its intermodal offerings.
3. Metrolink (Southern California Regional Rail Authority). Metrolink is the primary commuter operator serving the San Bernardino Line, connecting the city to Rialto, Fontana, Pomona and Los Angeles Union Station. It remains the backbone of car free commuting in the corridor and its weekend service has grown into a meaningful leisure travel option.
4. Arrow (San Bernardino County Transportation Authority Rail Service). Arrow provides the shorter distance rail link between the San Bernardino Transit Center and Redlands, using modern lightweight vehicles. It has been influential nationally as a demonstration of low emission rail technology on a compact corridor.
5. Amtrak. While long distance Amtrak service does not stop everywhere in the region, Amtrak thruway connections and nearby station access give San Bernardino residents entry to the national passenger network, including routes toward Arizona, New Mexico and the Pacific Northwest.
6. San Bernardino County Transportation Authority. As the agency responsible for planning, funding and delivering rail capital projects in the county, SBCTA effectively shapes the future of local rail. Its work on grade separations, station improvements and corridor extensions determines how quickly the network can grow.
7. Southern California Regional Rail Authority Maintenance Operations. The maintenance and operations arm supporting commuter service maintains track, signals and rolling stock across the corridor. Reliability statistics on the San Bernardino Line depend heavily on this less visible but essential work.
8. Pacific Harbor Line. Although its operations center on the port complex, Pacific Harbor Line switching service is the first link in most container moves that eventually pass through San Bernardino by rail. Understanding its role clarifies why port congestion propagates inland.
9. Trona Railway. This regional short line in San Bernardino County demonstrates the continuing importance of specialized industrial rail, hauling mineral products from desert operations to interchange points with the Class I network.
10. Omnitrans Rail Connected Transit Services. While Omnitrans operates buses rather than trains, its coordinated timed transfers at the San Bernardino Transit Center make rail practical for riders whose journeys begin away from a station. In practice, the rail network only works because this connection exists.
Freight Rail Advantages for Inland Empire Shippers
Rail offers three concrete advantages in this market. Cost per mile for long haul intermodal is typically well below over the road truckload for distances beyond roughly seven hundred miles. Emissions per ton mile are substantially lower, which matters to shippers reporting scope three carbon data. And rail capacity is less exposed to driver shortages that periodically tighten trucking availability. The trade off is transit variability and the need for reliable drayage at both ends, which is why the best supply chains pair rail linehaul with disciplined local trucking.
Passenger Rail and Regional Development
Commuter rail has become a development catalyst. Station areas around downtown San Bernardino have attracted mixed use interest precisely because transit access reduces household transportation costs. Regional planners continue to study corridor extensions and service frequency improvements, and the introduction of cleaner traction technology has positioned the county as a testbed watched by agencies nationwide.
Practical Guidance for Riders and Shippers
Commuters should check timed transfer windows carefully, since a missed connection at a hub can add significant travel time during off peak hours. Purchasing multi ride or monthly passes usually reduces cost meaningfully for regular travel. Shippers evaluating rail should ask whether a facility is truly rail served with an active siding or merely rail adjacent, confirm switching frequency, and model total landed cost including drayage, transload and inventory carrying cost rather than comparing linehaul rates alone.
Final Thoughts
Rail in San Bernardino is both heritage and infrastructure for the future. The operators above serve very different customers, from a daily commuter heading to Los Angeles to an importer moving hundreds of containers a month. Knowing which organization does what makes the network far easier to use effectively.