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Studies flag double-tracking over Donner Summit and bus-only lanes on SR 89/267 as long-term and near-term steps
Summary
Regional agencies, Caltrans and the Capitol Corridor JPA outlined Corridor ID planning work, noted the need to re-double track sections over Donner Summit to accommodate freight and passenger growth, and described a Placer County study that recommends bus-only lanes on SR 89 and SR 267 to improve transit reliability.
Regional transportation officials and planners described a multi-decade planning effort to expand passenger rail and near-term roadway actions to move people more efficiently on key Tahoe corridors.
"Some of the tracks over Donner Summit will have to be double tracked," Corey Peterson of the Placer County Transportation Planning Agency said, summarizing rail-freight constraints that have emerged from Caltrans and corridor studies. "It used to be double tracked back in the mid-twentieth century."
Why it matters: Multiple agencies said rail expansion to Truckee and Reno faces technical and coordination challenges because Union Pacific owns the rail right-of-way and freight growth must be balanced with any added passenger service. Officials said federal Corridor ID planning and local "first-last-mile" studies aim to align near-term investments with longer-term rail goals.
Key takeaways from the presentations
- Corridor ID and FRA funding: Jim Allison, planning manager for the Capitol Corridor Joint Powers Authority, described the Federal Railroad Administration's Corridor ID program as a multi-stage process that starts with systems planning and can lead to federal funding for project development. Allison said the corridor planning includes the rail route from Sacramento into Reno and multiple project phases with varying federal match rates.
- Double-tracking need: Planners said that increased freight and passenger service will likely require restoring double track over the Donner Summit tunnels that were single-tracked after the mid-20th-century changes; restoration would need engineering, environmental review and significant funding.
- Near-term roadway options: Peterson summarized a Placer County study that recommends bus-only lanes on State Route 89 (roughly from the Nevada/Placer line to State Route 28) and on State Route 267 (roughly from Shafer Mill Road to Northstar Drive) to speed buses through ski-traffic bottlenecks and aid evacuation capability.
- First-last-mile and coordination: Agencies highlighted a recent first-last-mile study that collected more than 5,000 public responses and recommended programmatic actions (wayfinding, TNC incentives, EV charging and shuttle coordination) to improve access to stations while larger rail investments are planned.
Quote
"Any increased passenger rail service tends to conflict with their own freight operations," said Corey Peterson of Placer County on the need to coordinate with Union Pacific. "Those two operations have to be balanced very delicately."
Caveats
Speakers emphasized these items are planning studies, not construction commitments. Allison said project phases can take many years and stressed iterative planning, federal environmental review (NEPA/CEQA alignment) and coordination with freight operators and multiple agencies.
What agencies will do next
Panelists said they will pursue federal and state planning funds, continue coordination under a Trans-Sierra transportation coalition, and refine near-term projects (bus lanes, station access) that can be staged before rail infrastructure is built.
