From Mike Sato:

Meager Creek Hot Springs was closed on September 19th due to a mudslide that occurred at Capricorn Creek. The Upper Lillooet River campsite and Meager Creek Hot Springs were fine. However, about 200m of Meager Creek FSR was washed out. Also the Capricorn bridge was washed out. So visitors will not be able to access Meager Creek Hot Springs until next spring. The mudslide damage was very large, so Meager Creek Hot Springs’s reopening will depend on how fast the BC Ministry of Forest can fund the reconstruction of the bridge and access road.

Meager Creek this past June (before the slide)