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Rock Slope Remediation at the Penobscot Narrows Bridge
In 2003, Haley & Aldrich, Inc. was retained by Figg Bridge Engineers, Inc. and the Maine Department of Transportation to provide geotechnical services for the replacement of the Waldo-Hancock Bridge and associated approach roadways, which included the design of a concave, semi-circular rock slope that varied in height up to 100 ft along the Prospect approach to the Penobscot Narrows Bridge. During construction of the Prospect approach and excavation of the rock slope, several areas of the rock slope were identified as needing remediation. Between 2005 and 2016, 23 areas along the rock slope were judged to pose potential safety and long-term maintenance issues of varying degree. In 2016, MaineDOT approved and secured funding to remediate nine different areas of the rock slope judged to be “most critical” and “moderately critical.” Less critical areas will continue to be monitored and could be remediated during future phases of the project.
Rock Slope Remediation at the Penobscot Narrows Bridge
In 2003, Haley & Aldrich, Inc. was retained by Figg Bridge Engineers, Inc. and the Maine Department of Transportation to provide geotechnical services for the replacement of the Waldo-Hancock Bridge and associated approach roadways, which included the design of a concave, semi-circular rock slope that varied in height up to 100 ft along the Prospect approach to the Penobscot Narrows Bridge. During construction of the Prospect approach and excavation of the rock slope, several areas of the rock slope were identified as needing remediation. Between 2005 and 2016, 23 areas along the rock slope were judged to pose potential safety and long-term maintenance issues of varying degree. In 2016, MaineDOT approved and secured funding to remediate nine different areas of the rock slope judged to be “most critical” and “moderately critical.” Less critical areas will continue to be monitored and could be remediated during future phases of the project.
Rock Slope Remediation at the Penobscot Narrows Bridge
Steinert, Bryan C. (author) / Krusinski, Laura (author) / Granger, Amber B. (author) / Chadbourne, Wayne A. (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 464-475
2019-03-21
Conference paper
Electronic Resource
English
Rock Slope Remediation at the Penobscot Narrows Bridge
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