Bridge is the most modern transportation systems more see the composition of the form, the construction of bridge engineering helps to relieve the pressure on the ground transportation, realize the efficiency of regional traffic comprehensive improvement. Domestic vehicle number has doubled in recent years, frequent traffic activities make bridge is facing serious gravity load, and a variety of diseases, threatening the safety of the bridge deck vehicle. Construction units in construction phase, should pay attention to the maintenance of bridge structure disease treatment, put forward a practical and reliable solutions. Half through bridge were examined in this paper, based on an engineering example, analyzed the common deterioration problems of concrete filled steel tube arch bridge, the corresponding protective measures are put forward.