Saturday, June 20, 2026

1929+1995 US-89A Navajo Bridges over Colorado River at Marble Canyon, AZ

1929: (Archived Bridge Hunter; Bridge Hunter; Historic Bridges; Satellite)

The replacement bridge is in the foreground. The 1929 bridge is now a pedestrian bridge.
Boat View, Aug 2013

The 2018 Street View below this photo shows that we are facing West. So, the bridge on the right is 1929, and the one on the left is 1995.
Fabrizio (imagea), Dec 2025

Street View, May 2018

The old bridge was narrow.
Panedia, Apr 2015

The length and width of the old span is 616' (187.7m) and 18' (5.5m). [BridgeHunter_1929]
The length and width of the new span is 725.8' (21.2m) and 44' (13.4m). [BirdgeHunter_1995]

Bruce LaFrance posted three images with the comment:
NAVAJO BRIDGE 
The bridge spans Marble Canyon, 470 feet [143.3m] above the Colorado River in Grand Canyon National Park and was considered the highest steel arch bridge in America when completed. The 750-foot-long steel bridge includes a 616-foot, three-hinged spandrel arch main span. It replaced Lees Ferry as the sole crossing of the Colorado River within a distance of 600 miles. The bridge was functional for the era in which it was constructed. However, its load capacity of 22.5 tons and width of just 18 feet failed to serve the needs modern vehicles. Studies began in the early 1990s to determine the best solution to the problem. Consideration was given to strengthening the bridge, but the costly option was deemed impractical. Several alternate sites were considered, but the final decision was to build a stronger and wider parallel bridge beside the existing structure. The NEW bridge was completed in 1995 and the original structure remains in service as a pedestrian crossing.
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A view looking East. The 1929 bridge is on the left.
Paul Jameson commented on Bruce's post

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