In July 1998, TriMet projected the Airport MAX extension to cost $125 million (equivalent to $ in dollars). Additional costs to purchase train sets and build related infrastructure raised this total to $182.7 million (equivalent to $ in dollars). Under U.S. federal regulations, the Port of Portland was able to fund only the portion of rail located within its property with approval from the Federal Aviation Administration (FAA). To solve this, the Port proposed dividing the project's financing into three parts, which the involved parties agreed to. The Port became responsible for the segment within airport property. The next of track, which ran through Cascade Station, went to private funding. TriMet, Metro, and the City of Portland covered the final along I-205.