According to the Walt Disney World website, it appears Big Thunder Mountain Railroad will be closed January 16-20 and is currently expected to reopen January 21. Hours have been recently removed from the website on those dates.
@danlb_2000 also posted these permits below.
@danlb_2000 also posted these permits below.
Looks like Big Thunder might be getting some work soon. Four different permits recently.
4485 CARIBBEAN WY(BIG THUNDER MOUNTAIN) - Provide labor, material and/or electrical for construction
4485 CARIBBEAN WY # B(BIG THUNDER MOUNTAIN RAILROAD) - General Construction
4485 CARIBBEAN WY # B(BIG THUNDER MOUNTAIN RAILROAD) - General Construction
4485 CARIBBEAN WY # B(BIG THUNDER MOUNTAIN RAILROAD) - Electrical