A　self-anchored　suspension　bridge　is　analyzed　for　its　structural　system　reliability,　and　the　bridge　reliability　is　relatively　high　under　vehicular　load.　Through　seeking　the　distinct　structural　system　fault　modes　the　relatively　weak　structural　elements　can　be　identified,　which　can　be　the　basis　on　its　reasonable　design　and　offer　the　reference　to　the　analysis　for　the　similar　bridge　structures.　The　results　verify　that　the　global　beta-Unzipping　method　and　the　improved　difference　equivalent　recursion　algorithm　is　efficient　and　applicable　for　system　reliability　evaluation　of　the　complex　structures　such　as　self-anchored　suspension　bridges.