The bill, introduced Friday, would authorize the National Park Service to grant a right of way for construction of the so-called bullet line through Denali National Park.
Although other routes are under consideration, one proposal would send the buried line along the Parks Highway for the roughly seven miles that the road passes through the park.
Murkowski said the alternative would be to build the pipeline around the park through remote and currently undisturbed land.
The line is intended to carry North Slope natural gas to communities along the Alaska Railroad.
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