The museum draws between 25,000 and 35,000 visitors each year.
The museum opened in 1996 and drew 250,000 visitors its first year.
Consultants estimated that the new museum would draw 300,000 visitors a year.
All this said, the museum has also drawn the motorcycle challenged.
In 1995 the museum drew national and international attention with a life experiment.
At its peak, the museum drew half a million visitors annually.
In the past, both museums had drawn just 450,000 over 12 months.
And other officials say the museum will not draw on the state's $12 billion operating budget.
Still, the museum draws about 1.5 million visitors a year.
In the fiscal year of 2012, the museum drew nearly 1.6 million visitors.