WASHINGTON—Utah will be able to limit its expansion of Medicaid under a decision from the Trump administration that falls short of a broadening of eligibility that the state’s voters had approved last year.

Voters in the November midterm elections had approved a full expansion under the Affordable Care Act that was projected to result in more than 120,000 people gaining coverage.

But state lawmakers in the Republican-led legislature asked the federal government to let Utah pursue a more scaled-back expansion that would cover an estimated 50,000 fewer people.

The program approved Friday by the Centers for Medicare and Medicaid Services will serve as a bridge for one year, when the federal government could increase its share of costs for the expansion, per request from the state. Utah also got approval to impose work requirements but state officials said that won’t begin until 2020.

Utah is also the first state to get approval to cap enrollment if there are insufficient state funds available to match the federal funds.