Location
Chicago, Illinois
Date
02 May 2013, 4:00 pm - 6:00 pm
Abstract
Lee County widened Mississippi River Road north of the Keokuk, Iowa in the early 1990s, removing material from the toe of slopes along the alignment. Gabion walls were constructed to provide grade separation. Significant precipitation occurred in the spring of 2010, and two (2) wall sections (about 100 feet each in length) failed. Based on our site exploration and instrumentation monitoring data, the gabion wall sections appeared to fail due to additional lateral load from a soil mass sliding on top of the shale bedrock and a buildup of high ground water levels. To support the additional load of the soil mass, reestablish the gabion wall/slope, and to keep the road open to traffic, a tied back, closely-spaced drilled shaft wall was designed to remediate the slide and augment the original gabion wall. This paper describes the investigation, analyses and the design and construction of the remedial measures adopted.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Beck, W. Ken and Sharma, Lok M., "Mississippi River Road Gabion Wall/Slope Stabilization" (2013). International Conference on Case Histories in Geotechnical Engineering. 61.
https://scholarsmine.mst.edu/icchge/7icchge/session03/61
Mississippi River Road Gabion Wall/Slope Stabilization
Chicago, Illinois
Lee County widened Mississippi River Road north of the Keokuk, Iowa in the early 1990s, removing material from the toe of slopes along the alignment. Gabion walls were constructed to provide grade separation. Significant precipitation occurred in the spring of 2010, and two (2) wall sections (about 100 feet each in length) failed. Based on our site exploration and instrumentation monitoring data, the gabion wall sections appeared to fail due to additional lateral load from a soil mass sliding on top of the shale bedrock and a buildup of high ground water levels. To support the additional load of the soil mass, reestablish the gabion wall/slope, and to keep the road open to traffic, a tied back, closely-spaced drilled shaft wall was designed to remediate the slide and augment the original gabion wall. This paper describes the investigation, analyses and the design and construction of the remedial measures adopted.
