00941401

Component

http://onlinepubs.trb.org...nepubs/circulars/ec049.pdf

Bridge management systems (BMSs) are useful tools for highway agencies' projection of the future condition of bridges to identify repair and maintenance needs at the network level. However, when a BMS is first implemented, no historical data on the condition of bridges are available for developing prediction models. A study was conducted by Wilbur Smith Associates and sponsored by the Federal Highway Administration to develop a methodology for highway agencies to predict the condition of concrete bridge decks at the network level for use in the Pontis BMS (or similar systems) when historical condition data are unavailable. The methodology was developed in a step-by-step format so that matrices can be constructed to determine the probability of transitioning bridge decks from one condition state to another in 1 year. These matrices can readily be used by highway agencies to predict the percentage of network bridge decks in each Pontis condition state for any future given year. In developing the methodology, it was recognized that corrosion of the reinforcing steel is the main cause of deterioration of concrete bridge decks in the United States. Prediction of the condition of bridge decks was possible by taking into account the severity of the corrosive environment, the permeability of concrete, and the concrete cover thickness. To construct the transition probability matrices for highway agencies, bridge decks were divided into groups with three levels of deicing salt exposure, three levels of specified water-cement ratio, and three levels of bar cover depth. By combining these bridge deck groups, 27 categories of decks were identified for the majority of U.S. highway bridge decks. Bridge decks in the same category share the same deicer exposure, specified water-cement ratio, and cover depth. Accordingly 27 transition probability matrices were developed to predict the performance of decks in each category.

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E-C049,
IBMC03-036
IBMC03-041

English

p. 418-429

2003-4

Transportation Research Circular

9th International Bridge Management Conference

Figures (1) ; References (8) ; Tables (10)

Bridge decks; Bridge management systems; Concrete; Corrosion; Deicing chemicals; Deterioration; Mathematical prediction; Matrices (Mathematics); Methodology; Reinforcing steel; Water cement ratio

Cover depth

Bridges and other structures; Data and Information Technology; Design; Highways; I24: Design of Bridges and Retaining Walls

TRIS, TRB

Apr 21 2003 12:00AM

• ADDRESSING UNCERTAINTIES IN BRIDGE MANAGEMENT WITH INFLUENCE DIAGRAMS
• ASSESSING THE SAFETY AND SERVICEABILITY OF EXISTING HIGHWAY STRUCTURES
• ASSET NEEDS FROM THE BOTTOM UP
• BRIDGE EXPERT ANALYSIS AND DECISION SUPPORT SYSTEM
• BRIDGE MANAGEMENT SYSTEM FOR CITY OF MOSCOW
• BRIDGE MANAGEMENT THROUGH THE INTERNET WITH DANBROWEB
• BRIDGE TESTING TO ENHANCE BRIDGE MANAGEMENT IN DELAWARE
• CONDITION-BASED BRIDGE ASSET VALUATION
• CUSTOMIZATION OF THE PONTIS BRIDGE MANAGEMENT SYSTEM FOR A TRANSIT AGENCY
• DETERMINATION OF BRIDGE DETERIORATION MATRICES WITH STATE NATIONAL BRIDGE INVENTORY DATA
• ECONOMETRIC MODEL FOR PREDICTING DETERIORATION OF BRIDGE DECK EXPANSION JOINTS
• FLORIDA PROJECT-LEVEL MODELS FOR PONTIS
• FORECASTING LIFETIME SAFETY AND SERVICEABILITY FOR MANAGEMENT OF A NETWORK OF HIGHWAY BRIDGES IN COLORADO
• IMPLEMENTATION OF ONTARIO BRIDGE MANAGEMENT SYSTEM
• INTEGRATION OF AASHTO'S BRIDGEWARE PRODUCTS
• LIFE-CYCLE COST APPROACH TO BRIDGE MANAGEMENT IN THE NETHERLANDS
• LIFE-CYCLE MANAGEMENT OF CONCRETE INFRASTRUCTURES FOR IMPROVED SUSTAINABILITY
• MAINTENANCE STRATEGY TO MINIMIZE BRIDGE LIFE-CYCLE COSTS
• MONITORING AND PLANS FOR ACTION FOR BRIDGE SCOUR: INSTRUMENTS AND STATE DEPARTMENTS OF TRANSPORTATION EXPERIENCES
• NEW BRIDGE PERFORMANCE MEASURES FOR PRIORITIZING BRIDGES
• PERFORMANCE-BASED PROGRAMMING OF BRIDGES IN NEW JERSEY
• PHYSICAL MODELING OF SCOUR IN BRIDGE MANAGEMENT
• PONTIS BRIDGE MANAGEMENT SYSTEM: STATE OF THE PRACTICE IN IMPLEMENTATION AND DEVELOPMENT
• PONTIS-BASED HEALTH INDEXES FOR BRIDGE PRIORITY EVALUATION
• PREDICTION OF DETERIORATION: START APPLICATION OF DEICING AGENT TAKEN INTO ACCOUNT
• STATEWIDE IMPLEMENTATION OF A BRIDGE MANAGEMENT SYSTEM AS PART OF INTEGRATED ASSET MANAGEMENT IN KENTUCKY
• STRUCTURAL PATCH REPAIR OF CONCRETE STRUCTURES: TOWARD THE DEVELOPMENT OF A RISK-BASED IMPLEMENTATION PROCEDURE
• SUPPLY AND DEMAND SYSTEM APPROACH TO DEVELOPING BRIDGE MANAGEMENT STRATEGIES: COMPARISON WITH TWO EXISTING APPROACHES
• SYNCHRONIZING AN AGENCY'S BRIDGE INFORMATION BETWEEN MULTIPLE VENDOR SYSTEMS: KANSAS DEPARTMENT OF TRANSPORTATION APPROACH
• SYNTHESIS OF ELEMENT CONDITION DATA FOR AGGREGATE ANALYSES IN BRIDGE MANAGEMENT SYSTEMS
• SYSTEM RELIABILITY MODELING IN BRIDGE MANAGEMENT
• TISBO INFRASTRUCTURE MAINTENANCE MANAGEMENT SYSTEM: INTEGRATING INSPECTION REGISTRATION AND MAINTENANCE MANAGEMENT
• UPDATING TIME-DEPENDENT RELIABILITY OF HIGHWAY BRIDGES WITH PONTIS BRIDGE MANAGEMENT SYSTEM INSPECTION RESULTS
• WEB-BASED BRIDGE MANAGEMENT SYSTEM