There are no bridges that visitors can drive on to get from the North Rim to the South Rim (or vice versa) in the park. You must take the surrounding roads over and around to access the other side.
The Grand Canyon in Arizona is 1,904 square miles in size, a little bigger than the whole state of Rhode Island! It is 277 miles long and 18 miles wide at its widest point.
There are 2 bridges, the old one (historic) and the new one (modern). The historic bridge remains intact and is used as a pedestrian bridge, where visitors can cross and visit the visitor center.
The modern Navajo Bridge is 470 feet tall with the Colorado River rushing below it. The modern bridge was built between 1993-1995 and was completed on September 14, 1995.
The historic Navajo Bridge is 467 feet tall above the Colorado River. The bridge was completed on January 12, 1929, and was a record-breaking feat being the highest steel arch bridge in the world at the time.