Crafco’s Matrix 501 Joint System is a pre-packaged, hot-applied asphaltic plug system for bridge joints. This cost-effective, maintainable solution provides a smooth, watertight joint capable of accommodating ±1 inch of annual movement. Say goodbye to calculating, measuring and field mixing with our factory-blended, polymer-modified asphalt binder delivered ready for installation in blockouts. Matrix 501 is the go-to choice for expansion, fixed-end, and pressure-relief joints in both new construction and rehabilitation projects. Build a better joint that lasts, with Matrix 501.