Tongass Corridor - Geotechnical Asset Management Research

Beckstrand, Darren L.; Mines, Aine; Yamasaki, Kenji; McCormick, Collin; Landslide Technology

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Tongass Corridor - Geotechnical Asset Management Research

2017-08-31
By Beckstrand, Darren L. ; Mines, Aine ; Yamasaki, Kenji ; ...

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English

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Creators:

Beckstrand, Darren L. ; Mines, Aine ; Yamasaki, Kenji ; McCormick, Collin

Beckstrand, Darren L. ; Mines, Aine ; Yamasaki, Kenji ; McCormick, Collin Less -
Corporate Creators:

Landslide Technology
Corporate Contributors:

Alaska. Dept. of Transportation and Public Facilities. Research and Technology Transfer
Subject/TRT Terms:

[+]

Corridor Health Index Culverts GAM Geotechnical Asset Management Geotechnical Engineering Landslide Ratings Retaining Wall Inventory Retaining Wall Ratings Retaining Walls Rockfall Ratings Rock Slopes Transportation Asset Management Unstable Slopes
Publication/ Report Number:

STP4000(126)(B)
Resource Type:

Tech Report
Geographical Coverage:

Alaska
Corporate Publisher:

Alaska. Dept. of Transportation and Public Facilities. Research and Technology Transfer
NTL Classification:

NTL-ENERGY AND ENVIRONMENT-ENERGY AND ENVIRONMENT
Abstract:

This report documents and presents the results of a study developing a Corridor Health Index that incorporates managed pavement and bridge assets as well as geotechnical assets. Geotechnical assets included rock slopes, unstable soil slopes, and retaining walls. Assessment of these assets adhered to the procedures developed and tested here and in the concurrent statewide Geotechnical Asset Management (GAM) program. The research utilized existing pavement and bridge ratings. Culvert ratings followed a simple observation-based evaluation of culvert function. The Corridor Health Index developed provides a weighted 0 to 1 index score. The index score corresponds to a Poor (0) to Good (1)condition, respectively. Application of the Index to North and South Tongass corridors helps the Department advance projects taking into account a number of potentially poorly performing assets. Research results have matched with Department priority setting, with a major rehabilitation project on South Tongass that repairs unstable slopes and retaining wall assets. Incorporating risk to the existing narrow Right-of-Way and potential effects of failing geotechnical assets on the adjacent parcels assist in identifying where geohazard and degraded asset conditions coexist within close proximity to private property.
Content Notes:

FUNDING NUMBERS AKSAS/Fed Project No.: 80900/STP000S(802) AKSAS/Fed Project No.: 62467/STP000S(126)
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:cc18a3abf2d558718f5f4938ad20acdf57d20564d0877587f674707f0ae8ffa7
Download URL:

https://rosap.ntl.bts.gov/view/dot/36231/dot_36231_DS1.pdf
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Tongass Corridor - Geotechnical Asset Management Research

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