A water susceptibility test was developed for laboratory use to indicate the susceptibility of miniature asphalt-aggregate briquettes to repeated freeze-thaw cycles in water. The test is simple, inexpensive, and extremely sensitive to changes in asphalt composition and aggregate type. Multiple briquettes prepared from the same asphalt-aggregate combination have nearly identical physical properties and are highly permeable to allow easy penetration of the water. The briquette is designed to minimize mechanical interlocking of the aggregate particles and thus the briquette properties are largely determined by the properties of the asphalt-aggregate bond. The test shows promise as a method for evaluating the resistance of various bituminous mixtures to moisture damage during freeze-thaw cycling using new and old pavement materials, asphalt modifiers, recycling agents, and asphalts derived from petroleum and syncrude sources.