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.
Fremont Bridge. The Fremont Bridge, which carries Interstate 405 and US 30 over the Willamette River, is a steel tied-arch bridge constructed in 1973. It is the longest bridge in the state of Oregon. The bridge has two decks, each of which carry four lanes of vehicular traffic. The design of the bridge, which was modeled after the Port Mann Bridge in Vancouver, British Columbia, was a collaborative process between engineers and the Portland Arts Commission.