Where on I-5 south can you see Mt. Washington in Oregon?

I'm fairly sure you can't see Mt. Washington from I-5. It's a relatively small mountain. You can see it and Three Fingered Jack very clearly from Route 20. This is Mt. Washington: You can see Mt. Jefferson from I-5 in the vicinity of Albany. read more

There are many places along I-5 where you can see Mt. St. Helens on a clear day. In some places you can see four snow-capped mountains--Rainier, St. Helens, Adams and Hood. You are seeing them from a distance, and they are all beautiful. read more

Interstate 5 (I-5) is an Interstate Highway on the West Coast of the United States, serving as the region's primary north–south route. It travels 277 miles (446 km) across the state of Washington, running from the Oregon state border at Vancouver, through the Puget Sound region, and to the Canadian border at Blaine. read more

Interstate 5 (I-5) is the main Interstate Highway on the West Coast of the United States, running largely parallel to the Pacific coast of the continental U.S. from Mexico to Canada. It travels through the states of California, Oregon, and Washington, serving several large cities on the U.S. West Coast, including San Diego, Los Angeles, Sacramento, Portland, and Seattle. read more