MDOT Update Dave Juntunen Michigan Department of ...2 Bridge Scour Evaluations • Deadline was...
Transcript of MDOT Update Dave Juntunen Michigan Department of ...2 Bridge Scour Evaluations • Deadline was...
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MDOT Update
Dave Juntunen
Michigan Department of Transportation
Michigan Bridge Conference
Big Rapids
March 23, 2011
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Bridge Scour Evaluations
• Deadline was December 12, 2009
• July 2010 all agencies 100% Complete. – Over 2000 evaluations
have been done in the last few years.
• THANK YOU!! • (A few Item 113 = 6 sneaking
into bridge data base.) – You will get a phone call
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Scour Critical Bridge
Plan of Action (POA)
• Deadline was December 12, 2010 – Extension given to April 1, 2011
• All but 17 counties and 23 cities have completed their POAs. – Over 2000 evaluations have been done in the
last few years.
• Currently about 93% complete
• THANK YOU!!
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Filling Out a POA
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Purpose of Scour Plan of Action
(POA)
• Help inspectors manage scour critical bridges during flood events
• Document conditions and bridge response during flood events
• It is a “Living Document ” that is meant to be updated
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FHWA Load Rating Review
• Many MDOT and Local
Agency bridges need to
be load rated or re-rated
to updated codes
• MDOT worked with the
FHWA and CRAM to
develop action plan with
milestones and deadlines
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MDOT Bridge Advisories
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Tier One
• Bridges with no Load Rating – Either NBI Item 63 (Operating Load Rating
Method) or NBI Item 65 (Inventory Load
Rating Method) is coded as “5” (No load
rating performed
– NBI Item 64F (Federal Operating Rating) =
NBI Item 66 (Inventory Rating) = 32.7 metric
tons
– Any of NBI Items 63, 64F, 65, or 66 is null
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Tier 2
• Bridges in Poor Condition
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Tier Three
• Wrong Methodology – Built or rebuilt between 1993 and 2010 and
rated by Allowable Stress
– Built after 2010 and not rated by LRFR
– Carries NHS traffic and rated by ASR
– Coding Incompatibility: Item 70 (Bridge Posting) < 5
– Should be closed, can’t carry 3 US Tons
– Federal ratings not in proper proportion
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First Steps
• Check Bridge File For Load Rating Documentation – If Documentation Is
Present, Check If They Match The SI&A Load Rating Data
– Check If Assumptions Are Still Valid
• Generate MBRS Load Rating Needs Report
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Michigan has a Super
Site license for Virtis
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Bridge Analysis Summary Sheet
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Bridge Analysis Assumption Sheet
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Every Day Counts
• Goal – By December 2012, 25% of
bridges, constructed/reconstructed
with Federal Aid to incorporate at
least one Accelerated Bridge
Construction (ABC) or major precast
component.
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Precast Pier Caps and Columns
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Abutments
This abutment segment took 8 minutes to place.
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Decks and Superstructure
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Precast Element Challenges
• Connections
• Tolerances
• Weight
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Self Propelled Mobile Movers
(SPMT)
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AASHTO Bridge
Preservation Partnerships http://www.tsp2.org/bridge
• Action Plan – 2011 Meeting
• St.Louis, MS
– Out-reach to local agencies
– Develop Performance Measures
– Regional collection of specifications, guides, standards
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Track Deterioration (Know how long things last)
Black Rebar
Deck time to
Poor = 35
years
Epoxy
Coated
Rebar
Deck
time to
poor =
70+
years
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Stainless Steel Rebar
• Use on high volume routes, traffic and rail
• Reduced deck thickness
• Anywhere you don’t want to come back
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MDOT Scoping Manual
• Bridge Sections
in Manual – Understanding
Bridge Condition
Data (pg 4-7
– Signs of Bridge
Distress (pg 5-30)
– Bridge Preservation
Rules (pg 5-38)
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MDOT Bridge Operations (Contacts for Local Agencies)
• Dave Juntunen (Engineer of Bridge Operations)
– Phone: 517-322-5668
– e-mail: [email protected]
• Robert Kelley (Bridge Management Unit)
– Phone: (517) 322-1398
– e-mail: [email protected]
• Richard Kathrens (Bridge Inspection Program
Manager) – Phone: 517- 322-5715
– e-mail: [email protected]
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MDOT Bridge Operations (Contacts for Local Agencies)
• Vacant (Load Rating Program Manager)
• Creightyn McMunn (Load Rating Engineer) – Phone: 517-322-1186
– e-mail: [email protected]
• Lou Taylor (Fracture Critical & Movable Bridges) – Phone: (517) 322-6092
– E-mail: [email protected]
• Kelley Davis (Fatigue & Scour) – Phone: (517) 322-6796
– e-mail: [email protected]
• Linda Reed (Bridge Scoping) – Phone: 517-322-5622
– e-mail: [email protected]
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Thank You