High Bridge Area Roadway Slide, Letchworth State Park, Portageville, New York
The Portageville entrance road to Letchworth State Park had experienced subsidence for many years requiring numerous pavement repairs. By 2007 the slope conditions had deteriorated to the point where it was difficult to maintain traffic on the road. Vehicles rounding the curve beneath the bridge were encountering a pavement dip that was nearly 3 feet in depth. Approximately 150 feet of the road was severely cracked and showed signs of significant movement. In response to the deteriorating slope and road conditions the OPRHP commissioned an engineering study to determine the cause of the subsidence and to formulate a plan to remediate slope movements. This paper describes the subsurface explorations conducted to evaluate the conditions and the subsequent design and construction to remediate the area.
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Corporate Authors:
New York State Thruway Authority
200 Southern Boulevard, P.O. Box 189
Albany, NY United States 12201-0189 -
Authors:
- Nichols, Andrew J
- Bojarski, James
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Conference:
- 60th Highway Geology Symposium
- Location: Buffalo NY, United States
- Date: 2009-9-29 to 2009-10-1
- Publication Date: 2009
Language
- English
Media Info
- Media Type: CD-ROM
- Features: Figures; Maps; Photos;
- Pagination: pp 22-34
- Monograph Title: Proceedings of the 60th Highway Geology Symposium
Subject/Index Terms
- TRT Terms: Geotechnical engineering; Pavement cracking; Pavement design; Pavement distress; Pavement maintenance; Slope stability; Subgrade (Pavements); Subsoil
- Geographic Terms: Portageville (New York)
- Subject Areas: Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 01142307
- Record Type: Publication
- Files: TRIS
- Created Date: Oct 21 2009 8:29AM