If Congress fails to find money for the Highway Trust Fund, state transportation officials estimate they'll be forced to float the federal government $50 million to $110 million.
The six-year contract representing dockworkers from San Diego to Seattle ends today.
Portland City Council will vote Wednesday on submitting a measure to the Nov. 4 general election ballot that will restrict funds raised by the new Transportation User Fee.
Ridership increased on both buses and trains in the spring of 2014.
A group led by Clark County Republicans hopes to find a new solution to connect Southwest Washington and the Portland metro area.