1. Points for attention about the steel bridge coming into service
1.1 The bold loading limit and speed limit signboards for this bridge should be set up at the both ends of the bridges. In this case, every vehicle should roll at a constant speed of 5km/h, the traffic loading for a single span is HS20, and overloading, unbalance loading, over-speed and emergency brake of a vehicle rolling on the bridge are impermissible. Vehicles each weighing below 200kN could roll on the bridge at the interval of 15m. Those weighing between 200 kN-500 kN must roll across the bridge one by one to avoid unbalance loading.