$6.2 Million Dollars per animal over pass with more than 2 dozen animal overpasses planned: “For decades, animals have had to contend with heavy traffic on I-90 that has squashed plenty of creatures and cleaved entire populations in two.”
$60 Million Dollars per mile: “The project is one of more than two dozen wildlife crossings planned or completed as WSDOT manages a more than $900 million overhaul of a 15-mile stretch of highway between Hyak and Easton.”
More Info:
https://www.king5.com/video/news/local/video-proves-wildlife-bridge-on-i-90-is-needed/281-8115413
https://www.seattletimes.com/seattle-news/its-a-long-time-coming-6-2-million-wildlife-bridge-over-i-90-nears-completion/