Here are some resources for information about transportation funding in Oregon. For specific questions, please contact Ask ODOT.
What will happen to federal transportation funding?
Seven trends that spell trouble for transportation funding
State Transparency Website (revenue, contracting and expenditure reports for all agencies including ODOT)
Transportation funding programs (through ODOT)
Statewide transportation improvement program (Fix it or Enhance it)
ODOT budget information
ODOT budget book (pdf) - A simple explanation of transportation funding and ODOT's budget.