Trails, overlooks and parking lots near the Grand Canyon of the Yellowstone River are getting about $9.1 million in improvements and repairs.
The Casper Star-Tribune reports that the projects were partially spurred by fatal falls.
An 8-year-old California girl died about two years after an 18-year-old park employee fell to her death in 2012.
Work will take about four years and intermittently close certain areas.
The Yellowstone Park Foundation is funding the work with private donations and money from federal fees.
A Montana Conservation Corps student crew will help.
Trails will be rerouted to safer areas and walkways are going to connect historic overlooks, among other changes.
The first closures include part of the North Rim Trail until July 23 and Inspiration Point until the fall of this year.