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Federal Approval Puts Alaska’s Ambler Road Under New Environmental Scrutiny

Scientists warn construction could unleash pollution in a region already strained by rapid warming.

Nick Jans, an author who moved to Ambler, Alaska, in 1979, walks through the woods outside his home Monday, Sept. 29, 2025. (AP Photo/Annika Hammerschlag)
A dog plays on the first snow of the season in Ambler, Alaska, Wednesday, Oct. 1, 2025. (AP Photo/Annika Hammerschlag)
Erosion is visible on the banks of the Kobuk River near Ambler, Alaska, Tuesday, Sept. 30, 2025. (AP Photo/Annika Hammerschlag)
Tristen Pattee and his family eat a meal of beluga whale, bowhead whale, whitefish, moose and seal in Ambler, Alaska, Wednesday, Oct. 2, 2025. (AP Photo/Annika Hammerschlag)

Overview

  • The 211-mile industrial corridor would cross Gates of the Arctic National Park and span 11 major rivers and thousands of salmon-bearing streams.
  • Plans call for nearly 50 bridges, thousands of culverts and more than 100 truck trips a day at peak operations.
  • Federal biologists warn that heavy traffic could kick up naturally occurring asbestos that settles on waterways and vegetation used by caribou.
  • The Bureau of Land Management has designated about 1.2 million acres of nearby spawning and calving habitat as a critical environmental concern.
  • The region is warming four times the global rate, the Western Arctic Caribou Herd has dropped 66% to roughly 164,000, and residents are split between hoped-for jobs and subsistence risks with some fearing the road could later open to the public.