Prefabricated bridges have revolutionized bridge construction in the country. Using prefabricated bridges in many different applications give many advantages.
Using prefabricated bridges saves a lot of time. The first thing you need to do is building a bride in the traditional way is to construct the foundation for piers and abutments. Before beams and decks are placed, pier columns and caps must be built. Today, much time is saved because these elements can be prefabricated and installed as needed.
There is also less delay when using prefabricated elements. Weather only affects the portion of work done onsite since these elements are typically constructed in a climate-controlled environment. There will no longer be much delays due to weather.
The reduction of construction time will lead to greater cost savings. There are fewer delays and fewer road closures using prefabricated bridges. There will be no delays during rush-hour traffic. it is estimated that billions of dollars are wasted in gas and person hours each year due to traffic congestion. Fewer delays in construction projects will mean less congestion and controlled costs.
When workers construct bridges on site, then they are exposed to moving traffic. They are at risk of traffic accidents during peak hours. When construction time is reduced, then it also reduces exposure time to these hazards.
When constructing bridges, there can also be hazards when it comes to working over water or near power lines. There is reduced exposure to these dangers since prefabrication stages of bridge constructions occur in a safe controlled environment. With the use of prefabricated bent and pier caps, the time of workers to operate over water for over-water bridges is greatly reduced.
There are difficult constraints imposed on bridge construction in many job sites. If you are constructing a bridge on interstate traffic, then it can have heavy traffic. It is also difficult for bridge construction to be done with high elevations. Another constraint is the presence of adjacent stores or other facilities near the construction area.
These constructability challenges can be solved with prefabricated bridges since you don’t have to accomplish these tasks in the work zone. When the bridge is ready to install , that is the only time that the prefabricated bridge elements are brought to the construction site but they are constructed offsite. There are many processes in fabricating bridges that does not need to be done onsite and this includes formwork erection, formwork removal, steel reinforcement and concrete placement, and concrete curing.
Construction-related traffic disruptions for commuters and other travelers are minimized using prefabricated elements and systems. Bridges and roadway closures will not be closed for a long time since the prefabricated bridges simply need to be installed which doesn’t take really as long as traditional construction. It only take a short time to have the traffic back to normal. To minimize the inconvenience of travelers, prefabricated bridges are usually transported on site during non-peak hours.