The federal government promised Tuesday to pay half of the nearly $1 billion cost of the Central Corridor light-rail line between Minneapolis and St. Paul, touted as the largest public works project ever built in Minnesota.
"This really is a great day for the Twin Cities," said Federal Transit Administration head Peter Rogoff at a ceremony in St. Paul, where the agreement was signed.
But politically infused uncertainty lingers about the pace of future federal funding and whether delays could pressure local governments into picking up the rest of the tab.
Rogoff was joined by Democratic backers of the light-rail line, including U.S. Sen. Al Franken, U.S. Rep. Betty McCollum and Gov. Mark Dayton.
The signing occurred in a Capitol building on Robert Street, where initial work for the 11-mile line has been underway for months.
The agreement commits the Federal Transit Administration to pay $478 million to help build the line that will connect the two downtowns and run through the University of Minnesota as well as the state Capitol complex. Congress has approved $45 million for the project for this year. The Obama administration has budgeted $200 million for 2012.
But opposition from many House Republicans to new spending on transit nationwide could slow the flow of installments scheduled through 2015.
"It's going to continue to be a fight," McCollum said after the ceremony.