# Crossing the Northern Rockies

**URL:** https://forum.roadtrippers.com/t/crossing-the-northern-rockies/1170
**Category:** General
**Created:** [January 14, 2026, 10:18pm UTC](https://forum.roadtrippers.com/t/crossing-the-northern-rockies/1170 "2026-01-14T22:18:07Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![judyjcat](https://avatars.discourse-cdn.com/v4/letter/j/b77776/32.png) [@judyjcat](https://forum.roadtrippers.com/u/judyjcat)
#### Post date: [January 14, 2026, 10:18pm UTC](https://forum.roadtrippers.com/t/crossing-the-northern-rockies/1170/1 "2026-01-14T22:18:07Z")

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Any suggestions for traveling the lowest elevation crossing of the Northern Rocky Mountains from Washington state to Montana?

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### Author: ![LizC](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.roadtrippers.com/lizc/32/14_2.png) [@LizC](https://forum.roadtrippers.com/u/LizC)
#### Post date: [January 15, 2026, 10:01pm UTC](https://forum.roadtrippers.com/t/crossing-the-northern-rockies/1170/2 "2026-01-15T22:01:00Z")

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You’ll want to travel Lookout Pass (Elevation ~4,710ft) via Interstate 90. It’s a paved highway crossing of the Rockies and likely the _lowest major pass route_ you’ll encounter on I-90 heading east out of WA.

If for any reason that doesn’t work out (always check current conditions) Marias Pass (Elevation ~5,213ft) via US-2 in northern Montana is my next recommendation.