Affiliations: University of Nebraska, Lincoln, NE, USA | Federal Highway Administration, Washington, DC, USA
Note:  Address for correspondence: A.S. Nowak, University of Nebraska, Lincoln, NE 68588-0531, USA. E-mail: [email protected]
Abstract: The available live load models were developed for short and medium span bridges. The paper deals with the development of live load for long span structures. Loads are considered as random variables, with regard to magnitude and frequency of occurrence. In contrast to short and medium spans, a long span live load must include the multiple trucks being present. Based on the analysis of traffic records (weigh-in-motion and videos) taken on selected bridges, the design live load has been developed and a recommended design live load has been formulated for consideration in the bridge design code.
Keywords: Long span bridges, live load, weigh-in-motion, truck weight, multi-lane load, dynamic load