Federal max = $600 million (approx.), so we can get 50% Federal funding.

That leaves $551/2 to $900/2 = $275 - $450 million to finance locally. $137 - $225 from each of Oregon & Washington.

Oregon got $200 million for a LRT bridge, so they ought to be able to get $137 - $225 for this.

Washington should also provide $137 - $225 million. (just 2-3 times what they have already spent on studying the mega-project!!)