Chittenden Bridge, Concrete and steel arch bridge over the Yellowstone River in Yellowstone National Park, Wyoming, US

Chittenden Memorial Bridge is an arch bridge made of steel and concrete that spans the Yellowstone River and connects to the Grand Loop Road. The structure allows visitors to cross the river and reach viewpoints for both the Upper and Lower Yellowstone Falls.

The original bridge was built in 1903 by Captain Hiram M. Chittenden as part of the park's early infrastructure development. It was replaced with a new structure in 1963 to accommodate increasing visitor traffic and modern engineering standards.

The bridge was named Chittenden Bridge by 1912, six years after Hiram M. Chittenden left his post as park engineer, and it was christened Chittenden Memorial Bridge at the 1963 opening ceremony. Chittenden chose a single slender arch because the rapids below the Upper Falls made an ordinary bridge seem out of place.

The bridge sits at a central location in the park and is easy to reach from the main roads and nearby pullouts. During busy seasons, this area draws many visitors, so early morning or late afternoon visits tend to be less crowded.

The original 1903 construction involved continuous manual concrete mixing over an extended period to ensure the structure could safely span the river. This labor-intensive process reflects the engineering challenges of building in this remote mountain environment.