BRIDGE INFRASTRUCTURE PRESERVATION. CURRENT CHALLENGES Significant Growth in CMV Traffic Increased congestion and delay Demand for larger and heavier.

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Presentation transcript:

BRIDGE INFRASTRUCTURE PRESERVATION

CURRENT CHALLENGES Significant Growth in CMV Traffic Increased congestion and delay Demand for larger and heavier vehicles Mounting stress on infrastructure Greater need for effective and efficient enforcement

CURRENT CHALLENGES Bridge Infrastructure Deterioration 72,500 U.S. bridges “structurally deficient” $65.3 billion repair estimate Inexact methods to reduce, refine, prioritize actions – Uncertainties in traffic loading – Uncertainties in bridge response

BACKGROUND 2006 European Scan Tour Emerging technologies Unconventional procedures Novel data applications Innovative funding mechanisms Multinational harmonization THE NETHERLANDS BELGIUM GERMANY FRANCE SLOVENIA SWITZERLAND

EUROPEAN APPROACH Technology-based Policies/Procedures Structural/safety assessment – Slovenia, France enhance the accuracy of bridge safety conclusions through direct measurements Load testing – Slovenia uses “soft” load testing

SUPPORTING TECHNOLOGIES Overheight Vehicle Detection System Vehicle Profiler System WIM Systems – In-road – Bridge Dynamic Calibration Vehicle Vehicle Identification System Advanced Routing/Permitting System Archived Records Database

SUPPORTING TECHNOLOGIES Bridge WIM System Functions Measures, records weight using existing structures instrumented with strain transducers/gauges Measures, records axles using traditional sensors or Nothing-on-Road/Free-of-Axle Detector (NORFAD) systems Considerations Requires suitable bridge and location Most successful on short, stiff bridges Structural assessments require transducer calibration Calibration may require specialized expertise Estimated Cost $100,000 - $130,000 per bridge/system Varies by sensor type, on-site communication requirements

SUPPORTING TECHNOLOGIES Archived Records Database Functions Supports data-driven enforcement scheduling Supports preventative carrier contacts Supports enhanced data quality Encourages long-term performance monitoring Considerations Requires procedures for quality control Estimated Cost $225,000 - $300,000

IMPLEMENTATION STRUCTURAL ASSESSMENTS Archived Records Database Bridge WIM System Computer Interface/Software Voltage/Axle Sensors (X Weight Accuracy) Database

IMPLEMENTATION STRUCTURAL ASSESSMENTS SAFETY ASSESSMENTS Archived Records Database Bridge WIM System Database Computer Interface/Software Voltage/Axle Sensors (X Weight Accuracy) Computer Interface/Software Voltage/Axle Sensors (X Weight Accuracy) Database

IMPLEMENTATION STRUCTURAL ASSESSMENTS SAFETY ASSESSMENTSLOAD TESTING Archived Records Database Bridge WIM System Database Computer Interface/Software Voltage/Axle Sensors (X Weight Accuracy) Computer Interface/Software Voltage/Axle Sensors (X Weight Accuracy) Database Computer Interface/Software Voltage/Axle Sensors (X Weight Accuracy)

BENEFITS

FUNCTIONAL INTERFACE

QUESTIONS