Portland-Vancouver are debating the replacement of the Interstate 5 bridges crossing the Columbia River. Cost estimates are now as high as $6 billion.
“The bridge is probably a billion,” says the project manager. “The transit piece, similar.” Plus various extras; it all adds up.
![](http://ti.org/ColRiverBridge.jpg)
The original Columbia River bridge was built in 1917, and a duplicate bridge was added in 1958.