CEAO COMPLIANCE WITH FEDERAL REGULATIONS ON BRIDGE INSPECTIONS.pdf

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CEAO COMPLIANCE WITH FEDERAL REGULATIONS ON BRIDGE INSPECTIONS.pdf

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CEAO COMPLIANCE WITH FEDERAL REGULATIONS ON BRIDGE INSPECTIONS

Begin Slide ShowBegin Slide Show CEAO COMPLIANCE WITH FEDERAL REGULATIONS ON BRIDGE INSPECTIONS CEAO BRIDGE COMMITTEE Scott Coleman, Logan Co. Engr.- Co-Chair Tim Piper, Allen Co. Engr. - Co-Chair Brion Rhodes - Allen Co. Bridge Engr. - Speaker History of National Bridge Inspection Standards December 15, 1967-Silver Bridge over Ohio River Collapses killing 46, causing “ripple effect” throughout United States History of National Bridge Inspection Standards December 15, 1967-Silver Bridge over Ohio River Collapses 1968 - Federal Highway Act of 1968 Caused FHWA to create the National Bridge Inspection Standards (NBIS) directing state DOT’s to maintain inventory (NBI) of Federal-Aid Highway Bridges 1970 - Federal Highway Act of 1970 Limited NBI to only bridges on Federal-Aid Highway System 1978 - Surface Transportation Assistance Act of 1978 Caused NBIS requirements to be extended to bridges greater than 20’ on all public Roads. FHWA holds the State DOT’s responsible for the inspection of all public highway bridges within the State. Frequently Asked Questions on NBIS Website: /bridge/nbis/index.htm i l i i i i ’ i i i l i i i i i l i l i i i i ’ ll li l ’ i l i i ll li i i i i l i i i i i History of National Bridge Inspection Standards August 26, 1988 - Changes in NBIS, 23 CFR Part 650.305: Change in NBIS Inspection Procedures: c) Each structure required to be inspected under the Standards shall be rated as to its safe load carrying capacity in accordance with section 4 of the AASHTO Manual. 1993 - FHWA issues two memos reminding DOT’s that load ratings of bridges are required by NBIS March 22, 2004 - FHWA issues memo to allow the use of three additional codes (the Load Factor (LF), Allowable Stress (AS), or the Load and Resistance Factor Rating (LRFR) methods) for coding of method used to determine operating rating, and method used to determine inventory rating. Listing of FHWA Policy Memorandums: /legsregs/directives/policy/index.htm i i i i i ll i l i