GRAND CANYON NATIONAL PARK Grand Canyon National Park is getting $27.5 million in federal highway money to upgrade its aging fleet of shuttle buses, which help the more than 4 million people who visit each year get around the huge park.

The replacement project includes 30 new buses 20 that run on compressed natural gas and 10 electric buses. Charging stations will be installed for the electric buses. The new buses are expected to reduce pollution and ease the overcrowding of vehicles at the park.

The park has over 270 miles of paved and unpaved roads.

Officials from the Department of Transportation, Interior Department, the park and surrounding communities are announcing the grant Thursday at the canyons south rim to talk about the grant from the Federal Highway Administration.

With this National Park Service grant that is part of President Bidens Investing in America agenda, were helping to deliver safe, sustainable and reliable transportation investments that help families and visitors explore the Grand Canyon National Park and surrounding communities, Federal Highway Administrator Shailen Bhatt said in a statement.