Valley Transit officials say the break is near the Transit Center. It has closed the bathrooms in the Transit Center and the Appleton Public Library.
The library is closing at noon and will remain closed for the rest of the day.
Valley Transit routes 3, 4 and 5 are parking on the east side of The Transit Center between the center and the parking ramp.
There is also water and ice on Oneida and Washington streets. Those in the area are asked to be very careful.