There were a number line beams used throughout the modelling process. These models changed according to number of notional lanes, as well as number of spans.

The loading cases reveiwed are as follows:

1. one, two and three spans

2. one,two, three and four notional laneslanes loaded loaded.

​

A number of extreme patterns were observed. Extreme loading patterns are those patterns that would create the most adverse transverse and tortional effects on the bridge structure.