See the context of this sign.

Wayside Observation Shelter

Although the historic Navajo Bridge was opened in 1929, the
road from Flagstaff to Kanab, Utah, wasn't paved completely until 1937.
The improved road encouraged automobile travel, and motorists often
stopped here to enjoy views of the colorful canyon and the graceful
steel arch bridge.

The Civilian Conservation Corps constructed the Wayside
Observation Shelter between 1938 and 1941 to accommodate the increase in
visitors to this site. The shelter's rustic architecture is intended to resemble
the remains of an early pioneer building and is typical of architecture you
will see throughout the national park system in the west.

Don't miss the rest of our virtual tour of Navajo Bridge in 185 images.