Find the best storage units in Independence MO at StorageMart. Visit 16855 E US Highway 40 or call 816.373.1060. Get instant quotes online! We want to make your move into an Independence storage unit as easy as possible. StorageMart on Highway 40 East offers drive-up access to units as well as dock high access. Youll be able to park your moving truck right up to the dock and unload your items with ease. We also offer gate hours 7 days a week from 6:00 AM to 10:00 PM. This allows our customers to move on their own schedule. Need storage space for RV, cars, or boats? We have the parking space to accommodate your vehicle storage needs as well.