Visiting a national park could be way pricier in 2018

The National Park Service needs some cash.

On Tuesday, it said it's considering increasing vehicle entrance fees to 17 national parks by as much as 180 percent.

Under the proposed fee hikes, people visiting parks like the Grand Canyon and Yellowstone would pay $70 per private, noncommercial vehicle during the busiest months of the year. Current seven-day vehicle costs range from $25 to $30.

Motorcyclist fees would increase from as low as $12 up to $50. And visitors entering on foot or on bike would pay $30. They can currently enter for as low as $10.

The 17 national parks include Acadia, Arches, Bryce Canon, Canyonlands, Denali, Glacier, Grand Canyon, Grand Teton, Joshua Tree, Mount Rainier, Olympic, Rocky Mountain, Sequoia & Kings Canyon, Shenandoah, Yellowstone, Yosemite and Zion. The proposed entrance fee increases would be implemented during each park's peak season.

The National Park Service estimates these new fees would generate an extra $70 million in park revenue each year. It collected $200 million in the 2016 fiscal year.

It wants to use that money to improve the parks. It says roads, campgrounds, bridges and more need to be restored.

RELATED: This won't be the first price increase, check out the national park increases in 2015: 

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National Park fee increases\

Everglades National Park, Florida
Increasing the annual pass from $25 to $40

Photo by Joe Raedle/Getty Images

Pineland, Everglades National Park (Unesco World Heritage List, 1979), Florida, United States of America.

Photo by DeAgostini/Getty Images

Clouds loom over the Florida Everglades

Photo by Joe Raedle/Getty Images

A bird flies over the sensitive ecological landscape of the Everglades National Park home to many endangered and rare plants on March 16, 2015 in Miami, Florida.

Photo by Joe Raedle/Getty Images

Jimi Sadle (L), botanist at Everglades National Park; and George D. Gann, chief conservation strategist for the Institute for Regional Conservation,walk through the Everglades National Park as they give a tour looking for endangered plants on March 16, 2015 in Miami, Florida.

Photo by Joe Raedle/Getty Images

Tim and Gail Rumyon walk along a trail in Everglades National Park on August 8, 2013.

Photo by Taimy Alvarez/Sun Sentinel/MCT via Getty Images

Grand Canyon National Park, Arizona
Increasing the weekly car pass from $25 to $30

Photo by: JTB Photo/UIG via Getty Images

Early morning sun reveals the Grand Canyon as seen from the South Rim on July 13, 2014 at Grand Canyon National Park, Arizona.

Photo by Sean Gallup/Getty Images

Spring storm at sunset over Grand Canyon National Park, Yavapai Point, South Rim, Arizona, USA.

Photo by Wild Horizons/UIG via Getty Images

Rays of light shine over the Grand Canyon as seen from Yavapai point early June 10, 2009 in the Grand Canyon National Park, Arizona.

Photo by John Moore/Getty Images

View of the Grand Canyon, North Rim, with the rocks lighted by the first sun rays at sunrise in National Park, Arizona, USA.

Photo by Rob van Esch via Getty Images

Rocky Mountain National Park, Colorado
Increasing the annual pass from $40 to $60

Photo by Kevin Moloney/Getty Images

The last light of the sun catches mouton tops near Bear Lake in the Rocky Mountain National Park January 23, 2015.

Photo by Joe Amon/The Denver Post via Getty Images

Clouds over a mountain range, Rocky Mountain National Park, Colorado, USA.

Photo by DEA / L.ROMANO/De Agostini/Getty Images

Keith Conerly, right, and his daughter Kelley, of Denver, enjoy watching herds of elk Moraine Park in Rocky Mountain National Park in Estes Park, CO on September 25, 2014.

Photo By Helen H. Richardson, The Denver Post via Getty

Theodore Roosevelt National Park, North Dakota
Increasing the weekly car pass from $10 to $20, eventually $25

Photo by Education Images/UIG via Getty Images

A buffalo is seen in Theodore Roosevelt National Park outside Watford City, North Dakota.

Photo by Andrew Burton/Getty Images

North Dakota, Theodore Roosevelt National Park, View From Scoria Point Overlook.

Photo by Education Images/UIG via Getty Images

Little Missouri River, Theodore Roosevelt National Park, North Dakota.

Photo by Independent Picture Service/UIG via Getty Images

Yosemite National Park, California
Increasing the weekly car pass from $20 to $25-30, depending on season

Photo by Frederic J. Brown, AFP/Getty Images

A picture taken March 08, 2014 shows a view of Yosemite National Park valley.

Photo by Mladen Antonov, AFP/Getty Images

Highway 120 in Yosemite National Park, California, Tioga Pass road, Tenaya lake in background.

Photo by Universal Images Group via Getty Images

USA, California, View of half dome at Yosemite National Park

Photo by JTB Photo/UIG via Getty Images

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SEE MORE: The US Interior Secretary Is Being Sued Over Yellowstone Grizzly Bears

"We need to have the vision to look at the future of our parks and take action in order to ensure that our grandkids' grandkids will have the same if not better experience than we have today. Shoring up our parks' aging infrastructure will do that," U.S. Secretary of the Interior Ryan Zinke said in a statement.

According to a 2016 report, the National Park Service's backlog of deferred maintenance totaled over $11 billion.

At the 17 specified national parks, deferred maintenance accounts for more than $2.8 billion of that total. A congressional law says 80 percent of each entrance fee must be used to improve the park it was collected at.

The National Park Service will accept public comments on its new proposed entrance fees through Nov. 23. If implemented, the new prices would go into effect in 2018.

The proposed fee increase comes after the National Park Service hiked up the price of its lifetime senior pass from $10 to $80.

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