OREGON HIGHWAY BRIDGE MAINTENANCE A PILOT …...Defects Bridge Element 18. 19 • Helpful to...
Transcript of OREGON HIGHWAY BRIDGE MAINTENANCE A PILOT …...Defects Bridge Element 18. 19 • Helpful to...
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OREGON HIGHWAY BRIDGE MAINTENANCE A PILOT TRAINING COURSE /WORKSHOP
JEFF SWANSTROM, P.E.
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To familiarize the end users of the bridge
inspection reports (BIR) with the new Federal
and AASHTO requirements for bridge
inspection and how it affects the Local Agency
Bridge Inspection Program.
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• Identify the changes in the ODOT Bridge
Inspection Program
• Understand how the changes affect the format of
the bridge inspection report (BIR)
• Identify the new bridge element and defect
language of AASHTO and the National Bridge
Inspection Standards (NBIS)
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• Review Maintenance Recommendations and
Remarks
• Generating Maintenance Reports from the Bridge
Management System (BrM)
• National Bridge Inventory (NBI), Structure
Inventory and Appraisal Sheet (SI & A)
• Load Rating Information
• Temporary versus Permanent Repairs
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With more than 600,000 bridges in the U.S.,
many of them reaching their original 50-year
design lives, the need to ensure safety and
prioritize repair/replacement projects is ever apparent.
Complete, thorough and accurate data from the
BIR is the foundation of an effective bridge
management system.
The BIR helps agencies determine the state of
their infrastructure and prioritization of funding for bridge rehabilitation and replacement.
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ODOT CODING GUIDE (March 2015)
Where To Find:
Bridge Elements
Defects
Condition State Definitions https://www.oregon.gov/ODOT/Bridge/Documents/Bridge_manuals/codingguide2015.pdf
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Four Condition States (CS) for all elements
• CS1 is pristine condition-do nothing,
• CS2 is fair condition
• CS3 is in poor condition – typically this requires
an associated maintenance item
• CS4 is failed-perform analysis
Each Element has associated defects
• Defects quantities determine the overall
condition of the element9
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CONDITON STATE 1
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CONDITON STATE 2
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CONDITON STATE 3
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CONDITON STATE 4
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CONDITON STATE 1
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CONDITON STATE 2
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CONDITON STATE 3
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CONDITON STATE 4
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4 Condition
StatesQuantities
Defects
Bridge
Element
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• Helpful to
generate
maintenance
data and
work
prioritization
for local
agency and
state crews
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Maintenance Recommendations for br. no. 02173a
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Maintenance Recommendations for br. no. 02173a
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Maintenance Recommendations for Highway 35
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Maintenance Recommendations for Highway 35
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Maintenance Recommendations for Highway 35
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URGENT Maintenance Recommendations for Highway 35
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URGENT Maintenance Recommendations for Highway 35
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DECK SEAL Maintenance Recommendations for Highway 35
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DECK SEAL Maintenance Recommendations for Highway 35
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DECK SEAL Maintenance Recommendations for Highway 35
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Prioritization of Maintenance Needs
Critical - Needs to prevent the structure from being load posted.
(NBI Item 58, 59, 60, 61, or 62 < 3; or 113 = 2; or portion of defect in
CS4.)
Urgent - Repair As-Soon-Possible or to address a specific traffic
safety concern. (NBI item 58,59,60,61, or 62 < 4; or portion of defect
in CS 3).
Routine - (High, Medium, or Schedule) - Schedule the repair activity
with other bridge maintenance activities. Monitor - For the bridge
maintenance personnel to schedule site visits when in the area.
Monitor - For the bridge maintenance personnel to schedule site
visits when in the area31
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Primary Bridge
Components NBI ratings
Bridge Element
and Defect Remarks
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Describes the overall physical condition of the
Structure – (Rated each inspection by the Bridge Inspector)
Item 58 – Deck Condition (takes into account spalls,
delaminations, patches, cracks, efflorescence, and rutting)
Item 59 – Superstructure Condition (takes into account
only the superstructure members, not bearings, paint, etc)
Item 60 – Substructure Condition (takes into account piers,
abutments, fenders, footings, etc)
Item 61 – Channel Condition (takes into account the
physical condition for the flow of water and looks at stream
stability, riprap, slope protection, or stream control devices)
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Primary Bridge Components
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• Uses very general
subjective terms like:
good, fair or poor condition
• Ratings from high (best) to
(worst):
“9” = Excellent
“0” – Failed condition
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Primary Bridge Components
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General Inspection Notes
Maintenance
Recommendations
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The SI&A data sheet covers basic information for a bridge:
1. Bridge Data
Location, design details, structure geometry, clearances, roadway
data, Inventory and Operating Rating
2. Condition Ratings
Current overall current condition of primary bridge members
3. Appraisal Items
Compares bridge features to current standards.
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Structure Inventory and Appraisal Sheet (SI & A)
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Structure Inventory and Appraisal
Report (SI & A)
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Location
Design Details
Bolded
Items affect
sufficiency
rating
Vertical
Clearance
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Structure
Geometry
Inventory
and
Operating
Rating
Structure Inventory and Appraisal Report (SI & A)
Item 103
Temporary
Structure
Designation
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FHWA CODING GUIDE
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NBI Item 103 - Temporary Repairs
NBI Item 103 - Temporary Structure Designation
Code this item where temporary structures or conditions exist
Temporary structure(s) or conditions are those which are required to facilitate
traffic flow
Such conditions include the following:
Bridge shored up, including additional temporary supports
Temporary repairs made to keep a bridge open
Temporary structures, temporary run-arounds or bypasses
Other temporary measures, such as barricaded traffic lanes to keep the
bridge open
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NBI Item 103 - Temporary Structure Designation
• Any repaired structure or replacement structure which is
expected to remain in place without further project activity, other
than maintenance, for a significant period of time (>10 years)
shall not be considered temporary.(unless specifically notified
by the bridge owner that the repair is still considered temporary.
• However, with due consideration of the member capacity and
condition, a temporary repair can only be categorized as a
temporary repair if it at least has the same capacity as the
original members.
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NBI Item 103 - Temporary Structure Designation
Permanent or temporary? Permanent or temporary?
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NBI Item 103 - Temporary Structure Designation
Permanent or temporary? Permanent or temporary?
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NBI Item 103 - Temporary Structure Designation
Permanent or temporary? Permanent or temporary?
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Special
Hauling
Vehicles
Load Rating Summary
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Emergency
Hauling vehicles
Legal Trucks
Rating of
Bridge
Element 999
Ride Quality
(by Bridge
Inspector)
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?