This　paper　presents　a　condition　assessment　approach　of　cables　incorporating　experimental　deteriorated　model　and　in-service　loads　collected　by　SHM　system.　The　high-strength　steel　wires　were　placed　under　simulated　corrosive　media　based　on　the　Salt　Spray　Test　Standards.　The　geometric　feathers　of　the　corroded　steel　wire　surface　were　measured　by　to　generate　the　uniform　and　pitting　corrosion　depth　model.　The　long-term　deterioration　process　of　steel　wires　in　the　cables　considers　simultaneously　the　experimented　uniform　and　pitting　corrosion　due　to　simulated　environmental　attack　and　the　fatigue　propagation　induced　by　monitored　cyclic　stress.　By　employing　first　order　reliability　method,　the　reliability　of　the　cables　under　the　monitored　responses　is　further　estimated　in　terms　of　the　serviceability　specified　in　the　design　specification.　The　life-cycle　condition　assessment　of　stay　cables　provide　guidance　to　the　future　decision　making　related　to　maintenance　and　replacement.　©　2013　American　Society　of　Civil　Engineers.