1974 I-8 Pine Valley Creek (Nello Irwin Greer Memorial) Bridge near Pine Valley, CA

(Bridge Hunter broke Apr 22, 2023; Satellite)

T. Y. Lin International

Highway Engineering Discoveries posted
The Pine Valley Creek Bridge, officially named the Nello Irwin Greer Memorial Bridge, is a reinforced concrete box girder bridge in San Diego County, California near the town of Pine Valley.

HighestBridges, Image by Tim Farmer
"Pine Valley Creek is the highest concrete beam bridge in the United States with a 4-lane road deck 440 feet (134 mtrs) above the creek. It was the first bridge in the United States to be built using the cast-in-place segmental balanced cantilever method....Famous bridge engineer Man-Chung Tang was the chief designer behind the bridge. Since the construction of a segmental bridge had never been done in California, Mr. Tang and his team had to design everything from scratch including the gantry, travelers and forms." The main span is 450' (137m).

In case you need an adrenaline rush, this webpage explains how you can access a location from which you can hang from the bridge.

ropewiki, this webpage contains photos of details that no sane bridge fan would take.

If you want some less dangerous exercise, this page describes a walk along the trail that goes under the bridge.

groksuf, this page contains several more photos of the bridge.
A view from the south side of the bridge.