Citing a $11.3 billion maintenance backlog, the National Park Service announced a proposal to increase fees at 17 national parks. San Bernardino County's Joshua Tree National Park is among parks that could see prices go up.

Joshua Tree could see its entrance fee increase from $25 per car to $70 during peak season. That would also include a final cost of $50 per motorcycle and $30 per person.

The cost of yearlong "America the Beautiful" passes, allowing their holders to access to all parks and federal lands, including Joshua Tree National Park, will remain at $80. Park-specific passes would also remain at their current price of $75.

Commercial operators will also be facing fee hikes "following an 18-month implementation window," a release by the National Park Service states.

The public comment period on these proposed fee increases began Tuesday and will continue until Nov. 23, 2017.

According to the National Park Service , the increased fees at Joshua Tree would go into effect "as soon as practicable in 2018," from Jan. 1 to May 31, in an attempt to garner money during its busy five-month period.

More:Joshua Tree hikers died by murder-suicide, sheriff's officials say

More:Death of hikers in Joshua Tree was 'sympathetic murder-suicide,' uncle says. 'We hold no grudges.'

Similar thinking would be applied to the other 16 national parks, but the peak months for some parks will differ based on park-specific busiest months.

Here are the parks that could see a fee increase starting May 1, 2018:

Arches

Bryce Canyon

Canyonlands

Denali

Glacier

Grand Canyon

Grand Teton

Olympic

Sequoia & Kings Canyon

Yellowstone

Yosemite

Zion National Parks

Here are the parks that could see a fee increase starting June 1, 2018: