The Little Cypress Creek Brook is a historic bridge in rural western Phillips County, Arkansas. Located south of the hamlet of Postelle, it carries County Road 600 over Little Cypress Creek, west of Arkansas Highway 39. It consists of two spans of an aluminum-beam substructure, resting on concrete abutments and piers, with textured metal deck plating as the road surface. The bridge was built in 1942, and was probably designed by the engineering staff of the Arkansas State Highway Commission. It is a well-preserved example of a World War II-era bridge.
The bridge was listed on the National Register of Historic Places in 1995.