According to blogger Phyranula, it looks that way:
We’ve been getting rumblings about this for some time now: Ken Ham’s Creation “Museum” is struggling. This is not surprising. It’s initial success was due to novelty and capitalizing on controversy, but all of that is fading. … You have to spend money to make money, but they’re in the position now of having to pour more wealth into their enterprise than they can get out of it. It’s doomed to the fate of Holy Land USA and Heritage USA.
Phyrangula picked up the story from DeadState, which analyzed the sad decline:
[T]he Creation Museum is running out of money due to declining attendance, bringing their “Ark Encounter” project to a stand-still because of a lack of funding.
Interestingly, the reason for the slowing traffic seems to be creationism itself, since the main exhibit has literally not changed in 5 years. Most museums’ exhibits change as new discoveries are made, as artifacts travel from other museums to visit, or as adjustments in scientific thinking are made.