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News
AASHTO Journal
Daily Transportation Update
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AASHTO News Releases
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Today in Transportation History
Meetings
Meetings & Registrations
Sponsors
Associate Members
Store
Publications
Software
Training
Services
Technical Service Programs
AASHTO Census Transportation Solutions
Census Transportation Planning Products (CTPP)
Travel Trends
AASHTO Design Guidelines
AASHTO Environmental Management
AASHTO Equipment Management
AASHTO Innovation Management
AASHTO Materials Guidelines
AASHTO Operations Management
AASHTO Performance Management
AASHTO Preservation Management
AASHTO Product Evaluation & Audit Solutions
AASHTO Radio Frequency Solutions
AASHTO Rail Management
AASHTO re:source
AASHTO Resilience & Sustainability Management
AASHTO Safety Hardware Management
AASHTO Safety Management
AASHTO STEM Outreach Solutions
AASHTO Structures Guidelines
AASHTO Technical Training Solutions
AASHTO Transit Management
AASHTO Winter Weather Management
AASHTOWare Solutions
National Operations Center of Excellence
Centers of Excellence
Center of Environmental Excellence
National Operations Center of Excellence
Training
AASHTO Leadership Development Series
AASHTO Technical Training Solutions
Highway Safety Manual
Committees
Board of Directors
Board of Directors
Executive Committee
Strategic Management Committee
Policy Bodies
Transportation Policy Forum
Council on Active Transportation
Council on Aviation
Council on Highways and Streets
Council on Public Transportation
Council on Rail Transportation
Council on Water Transportation
Special Committee on Freight
Program Delivery and Operations Committees
Bridges and Structures
Construction
Design
Environment and Sustainability
Maintenance
Materials and Pavements
Planning
Right of Way, Utilities, and Outdoor Advertising Control
Traffic Engineering
Transportation System Operations
Enterprise/Cross-Discipline Committees
Communications
Data Management and Analytics
Funding and Finance
Performance-based Management
Safety
Transportation System Security and Resilience
AASHTO Emerging Mobility Areas
Agency Administration
Agency Administration Managing Committee
Civil Rights
Human Resources
Internal & External Audit
Knowledge Management
Equity Task Force
Special Committees
Special Committee on Research and Innovation
Research Advisory Committee
Special Committee on AASHTOWare
Communities of Practice
Local Programs Peer Exchange
Other
AASHTO Geospatial Online Transportation User Group
Geospatial Information Systems for Transportation
National Committee of the USA World Road Association (PIARC)
State-Amtrak Intercity Passenger Rail Committee
US Route Numbering
About
Organization
Membership
Jobs & Opportunities
Transportation Jobs
Awards
AASHTO Awards
Submit Nominations
Americas Transportation Awards
AASHTO Awards of Excellence
President’s Transportation Awards
25-Year Award of Meritorious Service
Awards and Past Winners
AASHTO Strategic Plan
AASHTO Annual Report
Diversity, Equity, and Inclusion
AASHTO Staff
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Pipeline Safety: Repair Criteria for Hazardous Liquid and Gas Transmission Pipelines
May 21, 2025
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