Two thousand federal transportation workers will be furloughed without pay on Monday courtesy of Sen. Jim Bunning, R-Ky.
Bunning has blocked a $10 million measure to pay for highway construction programs, saying it will increase the federal deficit.
"When 100 senators are for a bill and we can't find $10 billion to pay for it, there's something the matter, seriously the matter with this body," Bunning said.
Federal reimbursements to states will also be halted, the Transportation Department said in a statement late Sunday. According to the House Transportation and Infrastructure Committee, those reimbursements amounted to about $190 million a day.
"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.
It also cuts off a temporary extension for unemployment benefits for many Americans. But top Senate Republicans say they still plan to vote to extend those benefits later this week.