STB Restarts the Union Pacific–Norfolk Southern Merger Clock: Comments Due Nov. 18, Hearing Still Undated

The Surface Transportation Board's Aug. 18, 2026 order, filed under Docket No. FD 36873, removes the Union Pacific–Norfolk Southern merger application from the abeyance the Board placed it in earlier this year and sets a new procedural schedule for evaluating it. The Board accepted the applicants' revised merger filing on May 28, then held the proceeding pending supplemental information; Union Pacific and Norfolk Southern submitted additional materials on July 7 and July 27, and the Board determined the record was "sufficient to resume the procedural schedule."

The new dates: interested parties have until Sept. 4 to file a notice of intent to participate, comments are due Nov. 18, response comments are due Feb. 16, 2027, and a public hearing date is still to be set in a later decision. The Board also denied a request to expedite a separate piece of the case — the proposed divestment of the Terminal Railroad Association of St. Louis — and ordered the applicants to refile certain workpapers within 10 days without applying any filtering or screening criteria, a directive that reads as the Board pushing back on how the railroads packaged their supporting data.

The companies used the schedule reset to restate their case publicly. Union Pacific CEO Jim Vena and Norfolk Southern President and CEO Mark George both framed the filing in terms of network efficiency: the applicants project the combined system would create direct single-line service across 88,000 county-to-county lanes, add competitive rail options on 10,000 lanes that currently require an interchange, and shave 24 to 48 hours off transit time on shifted freight. The companies' own estimates put the savings at $1 billion in annual operating costs and $3.5 billion in annual customer savings, with 2.1 million truckloads projected to divert from highway to rail. None of those figures come from the STB order itself — they're the applicants' projections, filed as part of their case, and the Board's Nov. 18 comment window is exactly where shippers, competing railroads and state agencies get to contest them.

This is the second time this docket has changed pace publicly in three months: the Board's earlier May 28 acceptance-with-abeyance decision (Docket No. FD 36873, per the same case number) already drew formal STB press releases, and Trains and other rail trade outlets tracked the abeyance period as a sign the Board wanted more granular data before letting the clock run. The Aug. 18 order is the Board saying that data threshold has now been met — for scheduling purposes only.

What shippers and brokers with rail exposure should do next

A merger docket with a comment deadline three months out is not yet an operational event, but the filing window itself is the leverage point for anyone who ships intermodal or carload volume on either railroad.

The Nov. 18 comment deadline is the actual decision point to prepare for. Shippers and 3PLs who use UP or NS lanes — particularly the 10,000 lanes the applicants say would gain new single-line competitive service — have a formal window to file comments contesting or supporting the applicants' service commitments. Waiting until the hearing is too late; STB weighs the written record heavily, and competitors and shipper associations are already organizing their filings.

The workpaper refiling order is worth reading closely once it lands. The Board's instruction to refile without "filtering or screening criteria" suggests STB staff found the applicants' initial supporting data pre-selected in a way that favored their case. When those workpapers post to the docket, they'll show the raw lane-level data behind the 88,000-lane and $3.5 billion figures — useful for any forwarder trying to independently verify whether specific lanes they use would actually see improved service, rather than taking the press-release numbers at face value.

Don't treat this as close to resolved. Between response comments (Feb. 16, 2027), an undated hearing, and the STB's typical multi-year timeline on Class I mergers, a final decision is unlikely before late 2027 at the earliest — in line with the applicants' own "late 2027" target. Contracts and lane commitments signed now shouldn't assume merger-driven service changes are imminent.