BRIDGE INSPECTION REPORTS 101 Protecting Your Bridge Inventory for the Future Jason Kelly, PE
>> Presentation Overview Program History Data Collection Reporting Sufficiency Rating 5/26/2016 Bridge Inspection Reports 101 2
>> Program History Silver Bridge Collapse in W.Va., 1967 FHWA Photo Archive 5/26/2016 Bridge Inspection Reports 101 3
>> Program History Surface Transportation Assistance Act, 1978 5/26/2016 Bridge Inspection Reports 101 4
>> Program History Mianus River Bridge Collapse in Conn., 1983 FHWA Photo Archive 5/26/2016 Bridge Inspection Reports 101 5
>> Program History Schoharie Creek Bridge Collapse NY, 1987 FHWA Photo Archive 5/26/2016 Bridge Inspection Reports 101 6
>> Program History I-35W Bridge Collapse in Minn., 2007 OBEC Load Rating of Wind River Bridge FHWA Photo Archive 5/26/2016 Bridge Inspection Reports 101 7
>> Program History Reference Materials 5/26/2016 Bridge Inspection Reports 101 8
>> Presentation Overview Program History Data Collection Reporting Sufficiency Rating 5/26/2016 Bridge Inspection Reports 101 9
>> Data Collection 5/26/2016 Bridge Inspection Reports 101 10
>> Data Collection SI&A Sheet 125 Items, including: Condition Location ADT Geometry Detour Structure Type Replacement Cost 5/26/2016 Bridge Inspection Reports 101 11
>> Data Collection Structure Inventory and Appraisal per the FHWA Coding Guide Functionally Obsolete, Appraisal Ratings: comparing the bridge to current standards (rail, geometry, alignment, design load etc.) Structurally Deficient Ability to carry loads, deterioration 5/26/2016 Bridge Inspection Reports 101 12
>> Data Collection Element Level Condition Data 5/26/2016 Bridge Inspection Reports 101 13
>> Presentation Overview Program History Data Collection Reporting Sufficiency Rating 5/26/2016 Bridge Inspection Reports 101 14
>> Reporting Pontis Report 5/26/2016 Bridge Inspection Reports 101 15
>> Reporting Supplemental Reports 5/26/2016 Bridge Inspection Reports 101 16
>> Reporting Pontis Report- Front page 5/26/2016 Bridge Inspection Reports 101 17
>> Reporting Pontis Report - Notes 5/26/2016 Bridge Inspection Reports 101 18
>> Reporting Pontis Report -Maintenance 5/26/2016 Bridge Inspection Reports 101 19
>> Reporting Pontis Report - Load Rating Data 5/26/2016 Bridge Inspection Reports 101 20
>> Reporting Pontis Report - Schedule & Links 5/26/2016 Bridge Inspection Reports 101 21
>> Reporting Supplemental Reports - Underwater 5/26/2016 Bridge Inspection Reports 101 22
>> Reporting Supplemental Reports - Fracture Critical 5/26/2016 Bridge Inspection Reports 101 23
>> Reporting Fracture Critical Definition Steel Tension members Non-redundant Only two load paths Simple spans No internal redundancy, i.e. built-up members 5/26/2016 Bridge Inspection Reports 101 24
>> Reporting Supplemental Reports - Fatigue Prone 5/26/2016 Bridge Inspection Reports 101 25
>> Reporting Fatigue Prone Details E D C C 5/26/2016 Bridge Inspection Reports 101 26
>> Reporting Supplemental Reports Gusset Plate 5/26/2016 Bridge Inspection Reports 101 27
>> Reporting Supplemental Reports Bore Logs 5/26/2016 Bridge Inspection Reports 101 28
>> Reporting Timber Bore Logs 14 inches Drill Direction Description: X1R12X1 Good Wood(X) Center Decay (R) SD = Starting to Decay 12 inches 1 1 5/26/2016 Bridge Inspection Reports 101 29
>> Reporting Supplemental Reports X-channel Profile 5/26/2016 Bridge Inspection Reports 101 30
>> Reporting Supplemental Reports X-channel Profile
>> Reporting Supplemental Reports - Photos 5/26/2016 Bridge Inspection Reports 101 32
>> Presentation Overview Program History Data Collection Reporting Sufficiency Rating 5/26/2016 Bridge Inspection Reports 101 33
>> Sufficiency Rating Definition: Calculated value used to indicate sufficiency of a bridge to remain in service. Broken down into 4 sections: Structural Adequacy & Safety (55%) Serviceability and Functional Obsolescence (30%) Essentiality for Public Use (15%) Special Reductions (13%) 5/26/2016 Bridge Inspection Reports 101 34
>> Sufficiency Rating How this affects Funding? Technical Ranking System for HBP Priority Points = (SRF + TBF + LDF + UBF) x 0.5 x BNM x FCM SRF makes up 50 out of 105 possible points Less than 80% = Eligible for Rehabilitation Less than 50% = Eligible for Replacement 5/26/2016 Bridge Inspection Reports 101 35
>> Sufficiency Rating Values that go into SR Structural Adequacy & Safety Serviceability & Functional Obsolescence Essentiality for Public Use Special Reductions 5/26/2016 Bridge Inspection Reports 101 36
>> Sufficiency Rating Structural Adequacy & Safety (55%) Superstructure (59) Deductions start at NBI = 5 or less Substructure (60) Deductions start at NBI = 5 or less Culvert (62) - If Applicable Deductions start at NBI = 5 or less Inventory Rating (66) Deductions of loads less than 32.4 tons 5/26/2016 Bridge Inspection Reports 101 37
>> Sufficiency Rating Serviceability and Functional Obsolescence (30%) # of lanes on and under (28) Average Daily Traffic (29) Approach Roadway Width (32) Bridge Roadway width (51) Vertical Clearance Over (53) Deck Condition (58) Structure Condition (67) Deck Geometry (68) Vertical Under Clearance (69) Waterway (71) Approach Roadway (72) Defense Highway (100) 5/26/2016 Bridge Inspection Reports 101 38
>> Sufficiency Rating Essentiality for Public Use (15%) Bypass Detour (19) Average Daily Traffic (29) Main Structure Type (43) Defense Highway (100) 5/26/2016 Bridge Inspection Reports 101 39
>> Sufficiency Rating Special Reductions (13%) Bypass Detour (19) Bridge Rail (36) Main Structure Type (43) 5/26/2016 Bridge Inspection Reports 101 40
>> Sufficiency Rating Shareware 5/26/2016 Bridge Inspection Reports 101 41
>> Summary Things to look for: Sufficiency Rating less than 50% NBI Ratings of Poor 4 or less Element Condition Ratings in states 3 or 4 Load Rating Information NBI Item 41, anything other than A for open Maintenance Recommendations Supplemental Reports Timber Bore Logs Fracture Critical Reports 5/26/2016 Bridge Inspection Reports 101 42
>> Summary Questions? 5/26/2016 Bridge Inspection Reports 101 43
BRIDGE INSPECTION REPORTS 101 Protecting Your Bridge Inventory for the Future Jason Kelly, PE jkelly@obec.com 971.634.2002 www.obec50.com