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JohnDayAtMouth.jpghttps://armchairengineer.com/2016/12/1964-flood-john-day-bridge
"In a nutshell, miscommunication and assumptions led to one of the bridge pier specs being changed from being sunk into solid bedrock to be placed on existing sand and gravel. The flood of 1964 undermined the pier and the bridge collapsed. Deaths were involved."
"In a nutshell, miscommunication and assumptions led to one of the bridge pier specs being changed from being sunk into solid bedrock to be placed on existing sand and gravel. The flood of 1964 undermined the pier and the bridge collapsed. Deaths were involved."
Brian Colburn, June 10, 2020Past and Present Views Along the Columbia River HighwayPermalink: https://www.facebook.com/groups/483015922488601/permalink/755044375285753
"Three men died as result of center span collapse of Interstate 80 N bridge at mouth of John Day River."
1964 Flood, #41Photo by John Killen The Oregonian: The 1964 Christmas Flood: 'State declared disaster area,' blares The OregonianUpdated Jan 10, 2019; Posted Dec 23, 2014 https://www.oregonlive.com/history/2014/12/the_christmas_flood_of_1964_st.html Accessed June 10, 2020
"One of the stories was the first about the failure of the new John Day River Bridge on Interstate 80 N (now I-84) in the Columbia River Gorge. The bridge -- had failed, killing one person – Dr. Joseph R. Dickson of Chinook, Mont. -- right away and two others later."
"One of the stories was the first about the failure of the new John Day River Bridge on Interstate 80 N (now I-84) in the Columbia River Gorge. The bridge -- had failed, killing one person – Dr. Joseph R. Dickson of Chinook, Mont. -- right away and two others later."
The Oregonian: The 1964 Christmas Flood: 'State declared disaster area,' blares The Oregonian Updated Jan 10, 2019; Posted Dec 23, 2014 https://www.oregonlive.com/history/2014/12/the_christmas_flood_of_1964_st.html Accessed June 10, 2020
"The twisted remains of what was the new $2.5 million John Day Bridge cling to the remains of an auto. The person inside the car was one of three people who died in connection with the collapse of the bridge along what was then I-80N, now I-84."
1964 Flood, #44Photo by John Killen The Oregonian: The 1964 Christmas Flood: 'State declared disaster area,' blares The OregonianUpdated Jan 10, 2019; Posted Dec 23, 2014 https://www.oregonlive.com/history/2014/12/the_christmas_flood_of_1964_st.html Accessed June 10, 2020
Armchair Engineer: 1964 flood – John Day Bridgehttps://armchairengineer.com/2016/12/1964-flood-john-day-bridge/?fbclid=IwAR3b0jJhgkoXcpxxUYgSngv1bnSQRzWgAu6LTlA57re69vVfwsZ6tIgjjf8
Armchair Engineer: 1964 flood – John Day Bridgehttps://armchairengineer.com/2016/12/1964-flood-john-day-bridge/?fbclid=IwAR3b0jJhgkoXcpxxUYgSngv1bnSQRzWgAu6LTlA57re69vVfwsZ6tIgjjf8
Links
Links
GAO: Review of Circumstances Relating to the Collapse of the John Day River Bridge on Interstate Route 80N in the State of Oregon, Bureau of Public Roads and Corps of Engineers (Civil Functions)
GAO: Review of Circumstances Relating to the Collapse of the John Day River Bridge on Interstate Route 80N in the State of Oregon, Bureau of Public Roads and Corps of Engineers (Civil Functions)
Armchair Engineer: 1964 flood – John Day Bridge
Armchair Engineer: 1964 flood – John Day Bridge
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