In-N-Out adds Thornton to list of planned locations

In-N-Out is famous for its burgers and fries, and also offers a secret menu. (Libby Flood)

In-N-Out plans to open a restaurant on the south end of Denver Premium Outlets in Thornton.

That’s the ninth spot in the state where the California-based burger chain is known to be planning a restaurant.

A development proposal submitted to the city of Thornton shows that In-N-Out is looking to open along 136th Avenue, between Grant and Lincoln streets. It would be just east of a Staybridge Suites hotel, and south of the outlet mall.

In-N-Out confirmed its interest in the site.

“It is still very early in the development entitlement process,” Carl Arena, the company’s vice president of real estate and development, said in a statement. “Once we begin construction on a new location, it usually takes us five to six months to build a restaurant and open for business. There is still quite a bit of work to be done before we can even set a time to begin construction.”

In-N-Out does not currently operate in Colorado, but is building a distribution center in Colorado Springs to serve restaurants in the state. The company has previously said it expects to open three locations by the end of the year, in Aurora, Lone Tree and Colorado Springs.

In-N-Out has not been announcing its planned locations, but the development materials submitted to local municipalities are public records.

Here is an updated list of locations where the chain’s restaurants are known to have been proposed:

Aurora (2020 opening): 14150 E. Alameda Ave., at Town Center at Aurora

Castle Rock: The west parking lot of The Outlets at Castle Rock

Colorado Springs (2020 opening): The southeast corner of InterQuest and Voyager parkways

Colorado Springs: The site of a former Outback Steakhouse northeast of Powers Boulevard and Constitution Avenue

Denver: Southwest corner of Central Park Boulevard and 46th Avenue

Fort Collins: 1700 S. College Ave.

Lakewood:150 S. Wadsworth Blvd., just north of Alameda Avenue

Lone Tree (2020 opening): 9171 Westview Road, near Park Meadows mall

Thornton: Along 136th Avenue south of Denver Premium Outlets

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