shall not apply to amounts for additional Tier I University Transportation Centers provided under this heading: Provided further , That there may be credited to this appropriation, to be available until expended, funds received from States, counties, municipalities, other public authorities, and private sources for expenses incurred for training: Provided further , That any reference in law, regulation, judicial proceedings, or elsewhere to the Research and Innovative Technology Administration shall continue to be deemed to be a reference to the Office of the Assistant Secretary for Research and Technology of the Department of Transportation. National infrastructure investments For capital investments in surface transportation infrastructure, $1,000,000,000 (reduced by $10,000,000) (increased by $10,000,000) (reduced by $1) (increased by $1) (reduced by $1,000,000) (increased by $1,000,000), to remain available through September 30, 2022: Provided , That the Secretary of Transportation shall distribute funds provided under this heading as discretionary grants to be awarded to a State, local government, transit agency, port authority, or a collaboration among such entities on a competitive basis for projects that will have a significant local or regional impact: Provided further , That projects eligible for funding provided under this heading shall include, but not be limited to, highway or bridge projects eligible under title 23, United States Code