How much did Perrine Bridge cost to build?
The I. B. Perrine Bridge is a 1,500 ft (457 m) truss-arch bridge carrying US 93 over the Snake River Canyon at Twin Falls, Idaho, with its deck 486 ft (148 m) above the river, begun in April 1973 and opened on 31 July 1976, replacing a 1927 crossing and operated by the Idaho Transportation Department. The department's own 2016 anniversary article gives its cost as USD 10,656,000, and KIVI News 6 (2026) rounds it to USD 11 million.
Final project cost
$10.656 million
Cost basis: 1976
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Cost evidence
Basis of the published figure
Final project cost1976
Project metrics
Key dimensions
- Total lengthIdaho Transportation Department
- 457.2 m
- HeightIdaho Transportation Department
- 148.1 m
Project record