This is an early beta version that’s still a work in progress. We hope to develop and refine the contents going forward. In the meantime, we’re making it fully available to the public as-is. Started by the Jefferson County Historical Commission in the 1990s, it was transferred to the Golden History Museum-City of Golden in 2020.

East Evergreen Interchange Bridge


AddressColo. Hwy 74 over I-70
QuadEvergreen, 1965 (1979)
SectionS15, T4S, R71W
Elevationc. 7600
SourceHistoric Inventory Record #5JF366, 1985 CHS
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Initialdate1998-11-20 00:00:00-07
PersonKER
Latestdate1999-04-05 00:00:00-06
Person2JMW
HistoryThe bridge features two spans, 130 feet and 256 feet, of continuous and composite welder, steel, girders. But in 1973, this structure is one of the finer examples "haunch" construction, in which a girder is built deeper at the pier to handle the greater stress at this point. A technique used to a limited extent in the 1970s, it is generally not used today due to the expense of long span steel structures. The design received a 1972 Award of Merit from the American Institute of Steel Construction.
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