Waiting period. traffic rate reaches 1,800 pedestrians daily, however, the bridge will require a new bracing system. Jeff has estimated that traffic wil ncrease current bridge system work before a system last only 8 years? off, a local traffic engineer, has designed a new pedestrian foot bridge that is capable of handling the current traffic rate of 220 pedestrians daily,. Once the new bracing system is rouired? What if the annual traffic rate increases at 8% annually? At what trafic increase rate will the current lfthe tramc rate increases at 5% annaly, how long wil the present bridge system work before a new bracing system is required