Take Exit 136 off I-10. Travel north on highway 276 (becomes Pennsylvania Avenue at the Marianna city limit approximately 1.3 miles. The Cooperative Extension Service is located in the Jackson County Agriculture Office Complex. If traveling U.S. Highway 90 (becomes Lafayette Street at the city limits), turn south at the juncture of of Lafayette Street and Pennsylvania Avenue (St. Rd. 276). Travel approximately 1.3 miles.