PERU, Neb. (AP) — Two brothers who created a chain of interstate truck stops have pledged $500,000 to renovate a football stadium at Peru State College.

Lee and Bill Sapp of the Sapp Bros. Travel Centers offered the donation for the Oak Bowl Stadium renovation project. Officials say the pledge represents the largest non-estate gift in the college’s history.

The brothers are making the donation to honor their mother, Emilie Hubka Sapp, and sisters Veloura Sapp Barnard and Zelma Sapp Drake. All attended Peru State and taught in Nebraska country schools.

The project is also expected to receive $7.5 million from the state, which lawmakers and Gov. Dave Heineman approved this year. Peru State is required to raise private money for the project to qualify for the available state aid.