CASPER, Wyo. (AP) — Union Pacific Railroad says it is spending $15 million to improve its rail line between Rawlins and near Rock Springs this summer.

The company said Monday it plans to replace 127,200 railroad ties, install more than 61,200 tons of rock ballast and renew the surfaces at 18 road crossings.
The project is expected to be completed by the end of September.

Union Pacific says it has hundreds of projects planned across its rail network this year to improve safety and efficiency and to reduce drivers' wait times at railroad crossings.

It has said it plans about $3.6 billion in new capital investments this year under its capital plan.