Passing through 13 U.S. states, I-90 is the longest east-west road in America. Besides being a go-to route for a cross-country road trip, I-90 connects major northern cities such as Seattle, Chicago, Cleveland, Buffalo, and Boston. From waterfalls to cultural sites to locally-flavored restaurants, you won’t be bored during your drive on I-90.

We're here with all you need to know about taking I-90. We’ll break down the various destinations and interchanges connected to I-90 along with some insider tips of must-see spots along the way!

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What is an interstate highway?

If you’re crossing state lines, more likely than not you’re taking an interstate highway to do so! The Interstate highway system is a network of major routes connecting America’s metro centers.

But what does I-90 mean? One or two-digit numbers mean that you’re on an interstate highway (usually!). An east-west route like I-90 is assigned an even number—odd numbers, on the other hand, indicate an interstate that runs north to south. The most important roadways tend to end in a zero or a five—as the longest interstate route, I-90 is definitely important enough to earn the zero in its route number!

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What states does I-90 run through?

Stretching from Seattle, Washington to Boston, Massachusetts, I-90 passes through a whopping 13 states! Take a look at where I-90 can take you:

– 296.92 miles

– 73.55 miles

– 551.68 miles

– 208.80 miles

– 412.76 miles

– 275.70 miles

– 108.61 miles

– 123.89 miles

– 156.28 miles

– 244.75 miles

– 46.30 miles

– 385.48 miles

– 135.72 miles

In Montana, Interstate 90 shares 7.65 miles with I-15. I-90 also overlaps with I-80 for 135.60 miles in Indiana.

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Major interchanges on I-90

If you’re trying to get off of I-90, make sure you’re ready for the right interchange! Take a look at our list of major connections and interchanges:

I-5 in downtown Seattle

I-405 in

Bellevue

near Seattle

I-82 / US 97 in Ellensburg

I-15 in

I-94 near

I-25 in

I-190 / US 16 in

I-29 in

I-229 in Sioux Falls

I-35 in Albert Lea

I-94 in Tomah

I-39 in

Portage

I-43 in

Beloit

I-290 in

Schaumburg

I-294 in Rosemont near

Chicago

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Best places to eat along I-90

Taking your time to smell the roses—or stop for a good meal—can add a lot to your I-90 adventure! With a ton of places to try the regional cuisine or dig into your favorite comfort food, you’ve got some options when planning out your stops. Here are some of the best places to eat along I-90:

Seattle Fish Guys

(411 23rd Ave S, Seattle, WA 98144): Open from 10 am to 8 pm, this is a great place to stop in for a bite. Fresh seafood, tuna, salmon, and more are served with shoyu sauce, and the local oysters will leave you wanting more!

Bar del Corso

(3057 Beacon Ave S, Seattle, WA 98144): You won’t want to miss this gem! Open from 4 pm to 9 pm, the Bar serves their signature Neapolitan-style pizzas as well as garlic mussels, baccala fritters, and grilled octopus with corona beans. Make sure you call ahead as reservations go fast!

Joule

(3506 Stone Way N, Seattle, WA 98103): Featuring award-winning Korean-inspired dishes, this inviting and open-concept restaurant is a treat! Open from 5 pm to 8 pm, Joule serves smoked tofu with mushrooms, smoked mackerel kedgeree, and short rib over grilled kimchi.

Juniper

(405 Canal St Suite 1300, Rapid City, SD 57701): Open from 5 pm to 9 pm, this family-owned restaurant offers a small menu that changes depending on what’s available! Their ingredients are locally-sourced and organic, creating delicious fare that really reflects the local flavor of Rapid City.

The Purple Pig Restaurant

(444 Michigan Ave, Chicago, IL 60611): This famous pork and wine restaurant is open from 11 am to 9 pm. The restaurant hosts an open kitchen with a chic dining area that will make you feel right at home.

Pro Tip Make sure you plan your meal stops in advance! Some restaurants will require a reservation, and some may hold odd hours. Keep your I-90 road trip stress-free by checking in beforehand!

What is there to do on I-90?

With so much of the country on its route, there’s plenty to see on I-90. You’ll pass through major cities like Seattle, Buffalo, and Boston, and be treated to parks and vistas on your journey.

Here are some of the best places to visit along I-90:

Eternal Flame

(Orchard Park, NY)

A Christmas Story House and Museum

(Cleveland, OH)

Washington Park Beach

(Michigan City, IN)

Witches Gulch

(Wisconsin Dells, WI)

Mill Bluff State Park

(Camp Douglas, WI)

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