This image shows the Navajo Bridge, which crosses the Colorado River over the Marble Canyon in northern Arizona.

The description states:
HOTELS – SHOPS
FREDY HARVEY
RESTAURANTS
This bridge over the Little Colorado River at historic Lee’s Ferry, 143 miles northeast of Grand Canyon Village, is 467 feet above the river with a span of 833 feet. It is the only means by which automobiles can cross from the South Rim to the North Rim of the Grand Canyon within the state of Arizona.
–The bridge shown here was completed in 1929, but with the passage of time was deemed insufficient to handle the loads and traffic volume of more recent vehicles. Another bridge was constructed in 1995, and this bridge closed to vehicles, though it remains open to pedestrians, bicyclers and bungee jumpers.
This card likely dates from the 1940s.