$900 Million to Builds Dozens of Wildlife Crossings Over I-90 in Washington

A massive project to build safe passages for wildlife over Interstate 90 in Washington State is a major win for environmental groups who have been advocating for the project for over a decade.

1 minute read

October 4, 2018, 1:00 PM PDT

By James Brasuell @CasualBrasuell


 Trans-Canada Highway in Banff National Park

A wildlife crossing built over the Trans-Canada Highway in Banff National Park. | EB Adventure Photography / Shutterstock

Ted Alvarez reports on a new overpass over Interstate 90 in Washington State that will offer safe passage over the freeway for wildlife.

The overpass is being built just east of Hyak and Snoqualmie Pass to connect the north and south Cascades. Three riparian underpasses are under construction nearby to offer safe passage to salmon.Together, the $6.2 million project is creating a wildlife superhighway.

According to Alvarez, the wildlife overpass is part of a larger $900 million project to add two dozen more crossings in a 15-mile section of I-90 as it crosses Snoqualmie Pass.

The article includes a lot more detail about the advocacy and planning that went into the project.

Tuesday, October 2, 2018 in Crosscut

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 28, 2026 - Zachary Whalen

A car drives through a puddle, making a large splash. Rain pours down.

California plans to bury El Niño’s downpour

If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.

October 28, 2026 - Grist

Lake Powell with much of the water evaporated.

Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River

Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.

October 30, 2026 - Yale Environment 360

: Construction of massive Samsung semiconductor fabrication plant

In Texas, data centers are swallowing promised parkland

Residents who moved to Taylor, Texas for a rural community now have to contend with three data centers in their backyard.

6 hours ago - Inside Climate News

A construction crew working on SunZia.

How a Chicago-sized wind farm beat the odds and powered on

The project spanned five presidential administrations and a standoff with a U.S. military base.

7 hours ago - Grist

A rendering of the basketball court, a green court under a blue sky.

MTA gives itself 30 days to transform pit into basketball court

The site has been under construction since 2022; the city originally estimated it would finish the court in 2024.

November 3 - Gothamist