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Big Thunder Mountain Railroad Begins Train Testing as Disney Files New Construction Permit

A new permit naming Coastal Steel indicates construction is still active during late-stage validation.

Overview

  • Walt Disney Imagineering filed a Notice of Commencement on November 17 listing Coastal Steel Inc. for general construction, with the filing valid for one year.
  • Refurbished trains have been spotted cycling the updated track, confirming that ride-system testing is underway at the Magic Kingdom attraction.
  • This phase of testing typically verifies safety controls, braking, timing, lift mechanics, and overall train dynamics on the rebuilt layout.
  • The coaster’s entire track was replaced earlier in the refurbishment, necessitating extended validation before guest operations resume.
  • Disney has not announced a reopening date beyond a 2026 return, and permits extending into 2026 accompany planned updates including a Rainbow Caverns-inspired scene tied to Barnabas T. Bullion’s backstory.