For　the　sake　of　discussing　maneuverability　of　bridge　life　cycle-cost　model,　takes　a　domestic　bridge　as　an　example.　Base　on　the　method　of　expert　investigation　and　valuations,　analyzes　and　valuates　construction　cost,　operation　cost,　backout　cost　in　bridge　life-cycle　cost.　Get　the　bridge＇s　100　years　life-cycle　cost　is　2076　million　yuan.　Calculation　and　result　analysis　of　example　further　proves　the　necessity　of　bridge　life-cycle　cost　analysis.