That cheap ticket to see T-Rex’s hulking skeletal frame will soon be, well, history.

The Board of Supervisors voted Tuesday to allow the Natural History Museum to raise its admission fees from $12 to $15 for adults, as well as other increases for children and seniors. The increases take effect come Jan. 1. Parking fees also will gradually increase over time, up to $20.

In a letter to the board, Lori Bettison-Varga, president and director of NHMLA, said over the last few years, the museum has enhanced its exhibits that include dinosaur fossils, its nature garden and a butterfly pavilion. The fee increases will help defray the costs for more free public programs, new exhibitions, and education outreach, she said in the letter. The Natural History Museum in Exposition Park also operates the George C. Page Museum at the La Brea Tar Pits, and the William S. Hart Museum in Newhall. Admission to the museum is free Los Angeles County residents 13 days out of the year, Bettison-Varga noted. The museum hasn’t raised admission fees since 2011, she added.

The fee increase will also add free hours to visit the museum.

Visitors check out animals in the North American Mammal Hall at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The original entrance to the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

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The Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The Otis Booth Pavilion entrance at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The edible garden at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)



The Age of Mammals at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

Children try to run though traffic near the Nature Lab at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The Dinosaur Hall at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The Rotunda at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)



The Age of Mammals at the Los Angeles County Natural History Museum. The LA County Board of Supervisors voted to raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The Dinosaur Hall at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The Dinosaur Hall at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

A visitor checks out gems at the North American Mammal Hall at the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)

The entrance to the Los Angeles County Natural History Museum. The LA County Board of Supervisors may raise the admission fee from $12 to $15. (Photo by David Crane/Los Angeles Daily News/SCNG.)



“To become more accessible to the community, NHM will be offering free admission for Los Angeles County residents from 3 to 5 p.m., Monday through Friday. This additional free access will be timed to coincide with the admission increase,” Bettison-Varga said in a letter to the board.

RELATED: Here’s why the Natural History Museum is covered in tattoos

The new prices and free hours for general admission won’t affect the additional fees visitors pay to see special exhibits. General admission ticket prices for the regular exhibits will increase as follows:

Adults: $12 to $15

Seniors/Students/Youth (13-17): $9 to $12

Child (3-12): $5 to $7

Child: (2 and younger): Free

As for raising the parking fee, Bettison-Varga said in the letter to the board that other area museums have increased their prices as well.

The current special exhibit is called “Tattoo.”

The Board approved the increases without discussion. Only one member of the public spoke in opposition to the increase.