The Four Corners Chamber of Commerce will celebrate the grand opening of Gallatin Gateway Storage & More this Friday at 10 a.m. The 400-unit facility occupies the former Miller hay field at the corner of Jackrabbit Lane and Gooch Hill Road. Chamber director Linda Petersen said the project represents “thoughtful growth” for the corridor. Complimentary mini donuts and a portable climbing wall for children will be provided. The developer, Summit Storage Partners LLC of Denver, has indicated two additional phases are planned pending county approval.