Landslide north of Talkeetna cut Alaska Railroad service to Denali in July

Rail access between Talkeetna and Denali National Park was suspended in late July after a landslide north of Talkeetna blocked the tracks, forcing Alaska Railroad to cancel service on that segment until crews cleared the debris, according to the Alaska Climate Summary for July 2026, published this week. The summary attributes the slide to heavy rain.

The rainfall behind the slide was concentrated in a three-day window. Two storms crossed the lower Susitna Valley between July 20 and July 23; the Amber Lake cooperative station southwest of Talkeetna logged 3.43 inches over two days, and Talkeetna Airport recorded 2.91 inches in the 24 hours ending at 10 a.m. on July 23. For the month, Talkeetna received 10.59 inches, the highest July total since 1922. The town also recorded measurable rain (more than 0.10 inches) on 12 consecutive days, its second-longest such streak on record.

The river response was measured at two points. The USGS gauge on the Talkeetna River above town crested just above flood stage, the highest crest since September 2012. Near the Susitna-Talkeetna confluence at the Alaska Railroad bridge, the crest ranked third highest since 2012, just below the August 2025 peak.

The climate summary does not state how long the segment remained out of service, and it records no account from passengers, railroad officials, or Talkeetna-area residents about the closure.

The July flooding arrived in a corridor already under emergency management. Alaska News previously covered the Mat-Su Borough Assembly's declaration of a local emergency over Susitna River erosion and flooding at Talkeetna, which unlocked 180 days of emergency authority and a request for state help with non-federal matching funds. A July 25 disaster declaration authorizing state public assistance for the borough was read into the Alaska State Senate record during a technical session. Erosion pressure on rail infrastructure extends north as well: the Alaska Department of Natural Resources has filed a preliminary decision to sell 6.31 acres in the Denali Borough to Alaska Railroad Corporation so the mainline can shift away from an eroding Nenana River bank near Healy. Written comments on that proposal are due by 4:30 p.m. on Aug. 14, and only those who comment may later appeal.