Allenton Access is a nine-acre Missouri conservation area in western St. Louis County along the Meramec River, southwest of Eureka and east of Pacific. Part of the Meramec Greenway and the Henry Shaw Ozark Corridor, it was acquired by the Missouri Department of Conservation in 1968 to improve public access to the river. The site now includes a boat launch, parking lot, and restroom in a forested setting. It supports recreation such as permitted fishing and is also known for its birdlife, with 46 species recorded there.