WASHINGTON — Two thousand federal transportation workers will be furloughed without pay today, and the Obama administration said they have a Kentucky senator to blame for it.

Federal reimbursements to states for highway programs will also be halted, the Transportation Department said in a statement late Sunday. The reimbursements amount to about $190 million a day, according to the House Transportation and Infrastructure Committee.

The furloughs and freeze on payments were the result of a decision last week by Republican Sen. Jim Bunning to block passage of legislation that would have extended federal highway and transit programs, the department said. Those programs expired at midnight Sunday.

The extension of transportation programs was part of a larger package of government programs that also expired Sunday, including unemployment benefits for about 400,000 Americans.

Bunning objected to the $10 billion measure, saying it would add to the budget deficit. He didn't immediately respond to a request Sunday for comment.

The impasse has provided the administration with an opening to excoriate Republicans for allowing popular programs to run out, even if only for a short time.

"As American families are struggling in tough economic times, I am keenly disappointed that political games are putting a stop to important construction projects around the country," Transportation Secretary Ray LaHood said in a statement.

Furloughs will affect employees at the Federal Highway Administration, the Federal Motor Carrier Safety Administration, the National Highway Traffic Safety Administration and the Research and Innovative Technology Administration.