Forecasting is the process of making predictions of the future based on past and present data and analysis of trends. A commonplace example might be estimation of some variable of interest at some specified future date.Prediction is a similar, but more general term.ualitative forecasting techniques are subjective, based on the opinion and judgment of consumers, experts; they are appropriate when past data are not available. They are usually applied to intermediate-or long-range decisions.
That is a very large bridge however the highest interstate bridge in the United States is the Glade Creek bridge. This 2,179-foot (664 m) long deck truss bridge[3] towers 660 feet (200 m) above the creek bed, making it the highest Interstate bridge in the United States.
The first major cantilever bridge in the United States was the 1877 built High Bridge over the Kentucky River West of Lexington, Kentucky. With 3 equal spans of 375 feet (114 meters), the wrought iron structure was also one of the highest bridges in North America, towering 275 feet (84 meters) above a deep gorge. In 1911 an even higher and more substantial steel truss replaced it on the same piers as the 1877 original.