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Qdoba plans to close 18 Chicago area restaurants by the end of September as part of a broader restructuring.

The fast-casual Mexican chain will close a total of 67 underperforming restaurants. It expects to more than offset the closings with new stores by the end of September. The chain had 647 restaurants at the end of its most recent quarter, of which 340 are franchised.

According to the company, the closings will let the company focus its marketing firepower on areas where it enjoys the greatest consumer affinity.

“By closing these locations and optimizing our company footprint, we can be more effective in focusing our advertising and marketing resources to support existing and planned restaurants in our core markets where we have high levels of brand awareness,” Qdoba President Tim Casey said in a statement. “We also expect to provide an even better dining experience for our guests as our operations teams concentrate their efforts on supporting these markets.”

Owned by San Diego-based Jack in the Box, Qdoba is part of two fast growing segments of the restaurant industry: Mexican and fast casual, generally representing higher quality, higher prices and longer waiting times than traditional fast food. But it’s also a direct competitor to Chipotle Mexican Grill, which has been one of the fastest-growing chains in the restaurant industry for a number of years.

The local stores slated for closure, according to Qdoba’s Facebook page, are:

20 E. Chicago Ave., Chicago

2191 N. Clybourn Ave., Chicago

2427 N. Lincoln Ave., Chicago

328 N. Michigan Ave., Chicago

227 E. Ontario St., Chicago

7343 W. Lake St., River Forest

587 E. Roosevelt Rd., Glen Ellyn

5141 W. 95th St., Oak Lawn

31 Orland Square Dr., Orland Park

4430 Fox Valley Center Dr., Aurora

383 W. Army Trail Rd., Bloomingdale

1400 Butterfield Rd., Downers Grove

50 N. Mannheim Rd., Hillside

2701 E. Main St., St. Charles

2001 S. Naperville Rd., Wheaton

1001 75th St., Woodridge

556 W. St. Charles Rd., Elmhurst

17W639 Roosevelt Rd., Oakbrook Terrace

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