unstable slope management for oregon highways: using cost-based risk assessment in conjunction with...
Post on 20-Jan-2016
221 Views
Preview:
TRANSCRIPT
Unstable Slope Management for Oregon Highways: Using Cost-Based Risk Assessment in Conjunction with Site Characteristics to Manage Landslide and Rockfall Effects on the Transportation System
Curran Mohney, C.E.G.Engineering Geology Program LeaderOregon Department of Transportation
Current Funding VS Repair Cost of the 500 Highest-Ranked Sites
$0
$500,000,000
$1,000,000,000
$1,500,000,000
$2,000,000,000
$2,500,000,000
$3,000,000,000
$3,500,000,000
6/30/1998 6/30/2003 6/29/2008 6/29/2013 6/30/2018 6/30/2023 6/29/2028 6/29/2033 6/30/2038 6/30/2043 6/29/2048
Current Funding
Outstanding Repair Cost
Program Goals:
• Locate and Rank all Unstable Slopes affecting the State’s Highways
• Prioritize and Select Projects
• Allocate Funds
• Provide Information to Policy and Decision-Makers
• Integrate Data and Analyses with Internal Disciplines and other Agencies
Program Criteria:Program Criteria:
● Manage All Unstable Slopes Uniformly
● Manage Risk and Liability Uniformly
● Scale Higher-Order Analyses Relative to Site Priority
● Utilize An Impact-Based System
● Rank and Prioritize Landslides and Rockfalls in Accordance with the Federal Highway Administration’s Asset Management Concept
Asset Management:Asset Management:• http://www.fhwa.dot.gov/infrastructure/asstmgmt/ind
ex.htm
• Decision-Making Methodology
• Draws from Business and Economics
• Supplements Scientific and Engineering Analyses
• Supports Decision-Making– Evaluate Trade-Offs– Conduct “What-If” Analyses– Make Sound “Investment” Decisions
Unstable Slope Rating System:Unstable Slope Rating System:
Hazard ScoreX
Maintenance Benefit-Cost FactorX
Highway Classification Factor=
Final STIP Score
Unstable Slope Data Collection Unstable Slope Data Collection Procedures:Procedures:
Unstable Slope Unstable Slope ManagementManagement
Locate, Rank, Prioritize, and Select Sites for Repair
Perform Analyses: Cost-Benefit, Life Cycle Cost, etc.
Provide Information to Regions, Districts, Other Agencies, Public, etc.
Unstable Slope Risk ManagementUnstable Slope Risk Management
Questions ?Questions ?
top related