This image shows visitors viewing the span of the Cut River Bridge in the Upper Peninsula of Michigan, using a viewing area constructed along with the bridge, as seen by the tunnel under the bridge abutment.
The description states:
No. 92 THE CUT RIVER BRIDGE
In Michigan’s Upper Peninsula
The Cut River Bridge on U. S. No. 2 was completed in 1946 and has since become a popular tourist attraction. The bridge has an overall length of 641 ft and a span of 551 ft. The Cut River is 147 feet below.
–Construction was begun in 1941, but was halted during World War 2 because of steel demands, so it took 5 years before being completed.
This card is dated 1951.