Long‐Term Bridge Performance (LTBP

Program Update

LTBP WorkshopJanuary 16, 20142014 TRB Annual Meeting, Washington, DCSue Lane, P.E.

Development and Outreach Engineer

Long‐Term Bridge Performance Program

Federal Highway Administration

Hamid Gh

Team Leader & Progr

Federal Highway Ad

Robert Zobe

Technical and Developm

Federal Highway Ad

To

Federal Highway Ad
Presentation Outline

• News and Milestones• Meetings with the States

• Publications• Timelines of Bridge Practices
Presentation Outline

• News and Milestones

 Data Collection in Mid‐Atlantic Clusters

 IDIQ Contract

 LTBP Strategic Bridge Performance Matrix
Northeast: CT, MA, ME, NH, NY, 

Mid-Atlantic: DC, DE, MD, NJ, PMixed Humid (Country Music): IMid West (Central): IA, IL, MI, MGulf Coast: AL, AR, FL, LA, MS, Rocky Mountains: CO, ID, MT, NNW-SW: AZ, CA, NV, OR, WACorridor: GA, KS, OK, MO, ND, included in other clusters)

AK

SD

OR

CA

NV

UT

AZ

CO

NM

TX

OK

LA

MO

IL

WI

MN

WA

MI

IN OH

PA

NY

TN

MS AL GA

SCFL

NC

VA M

D

D

M

VT NH

KY

IA

WV

ID

ND

MT

KS

WY

NE

AR

HI

M

LTBP Cluster States 

Mid-Atlantic Data Collection
Mid‐Atlantic Cluster Bridge

Untreated/Bare Cast‐In‐Place Concrete 

State

Steel Multi‐Girder,

Bare Deck

PS Concrete,

Bare Deck 

Delaware 3 2* 

Maryland 1 1 

New Jersey 2 3 

Pennsylvania 2 3* 

Virginia 3 2 

West Virginia 1 1* 

Total 12 12* 

*Several factors require the new selection of 3 Prestressed Concrete Multi‐girde

• Construction on I‐95 prevented access (DE)

• Current rehab includes LMC overlay (PA)

• Original construction included an LMC overlay (WV)
Long‐Term Data Collection

Mid‐Atlantic States:

• Steel Multi‐Girder with Untreated Deck Bridge 

• Prestressed Concrete MG with Untreated Deck 

• Conducted by Rutgers University with Assistan

DE, MD, NJ, PA, VA, and WV DOTs/SHA.

• Visual Inspection of Decks, Bearings, Joints; ND

• 24 Bridges Total to Date

 12 From Steel Bridge Cluster 9 From Prestressed Concrete Cluster 3 Prestressed Concrete Not Suitable Due to Unknow

Time of Selection—Selection of 3 Replacement Brid

• Status: Began March 2013—21 Completed to D
FHWA in collaboration with

Rutgers Universityenvisioned, planned,designed, and constructed anovel (robotic) system, byintegrating multiple non‐

destructive evaluation (NDE)technologies, for condition

assessment of concrete

bridge decks. RABITTM –

Robotic Assisted BridgeInspection Tool.

Pate

Need For Automated Data Colle
USW (Modulus)

IE (Delamination)

High-ResolutionImaging

RABIT TM COMPONENTS
IDIQ Contract

• Performance Management of Bridges In

Delivery Indefinite Quantity (IDIQ) Cont

• Used in Support of the LTBP Program

• 4 contractors were selected

Michael Baker Jr., Inc.Parsons Brinckerhoff, Inc.Pennoni Associates, Inc.Professional Service Industries, Inc. (PSI)
IDIQ Contract ‐ Pennoni Associ

• Onsite Staff for Technical Assistance

 Outreach/presentations/meetings/publication/web

• Development, Validation, and Maintenance of 

• Validation of NDE Tools and the RABITTM

• Develop Quantitative Bridge Traffic Database

 Funds from SAFETEA‐LU Earmark Pooled‐Funds for Study TPF‐5(283)

• Develop Accelerated Testing Database (SAFETEA• Data‐Driven Bridge Condition Index (IRT)

• QA/QC
LTBP Strategic Bridge Performance 

• Developing LTBP Strategic Bridge Perfor

Matrix in Conjunction with Rutgers

• Replaces “Tablecloth”• Also Developing an “Operational Matrix
Presentation Outline

• News and Milestones• Meetings with the States
State Coordinators

• August 28‐29, 2013—Held Annual Me

LTBP State Coordinators

 Showcased the RABITTM Bridge Deck Assessme

Hotel
Meetings with States  ‐ Status U

• Met with 38 States (incl. DC) to Date

Remaining

• FHWA Division Bridge Engineers Atte

• Two‐Way Conversation:

 LTBP Objectives and Summary What Are State’s Key Bridge Issues? Create DOT’s Bridge Practices Timeline Discuss Specific Candidate Bridges
On-Site Meeting Dates

Northeast: CT, MA, ME, NH, NY, Mid-Atlantic: DC, DE, MD, NJ, PEast Central: IN, KY, OH, TN, NCMid West (Central): IA, IL, MI, MGulf Coast: AL, AR, FL, LA, MS, Rocky Mountains: CO, ID, MT, NNW: OR, WASW: AZ, CA, NVCorridor: GA, KS, OK, MO, ND, 

SD

(6/14/13)

OR

(3/14/13)

CA(3/15/13)

NV

(3/20/13) UT

(6/5/13)

AZ

(3/19/13)

CO

(6/6/13)

NM

TX

(2/28/13)

OK(7/12/13)

LA(2/25/13)

MO(7/8/13)

IL(7/25/13)

WI

(7/26/13)

MN

WA(3/13/13)

MI

IN

(4/25/

13)

OH(5/3/13)

(9/1

TN

4/23/13)

MS(2/20/13)

AL(2/21/13)

GA(4/29/13)

SC

(5/1/13

FL(2/21

(5

(

KY

(4/24/13)

IA 

(7/22/13)

WV

(10/9/1

2)

ID

(6/11/13)

ND

MT

(6/12/13)

KS(7/10/13)

WY

(6/4/13)

NE

AR(2/19/13)

AK

HI
Presentation Outline

• News and Milestones• Meetings with the States

• Publications
LTBP Products ‐ Publication

Recently Published Documents:

• Robot Brochure• Report: FHWA LTBP Workshop to Identify Brid

Substructure Performance Issues (NTIS Only)

• TechBrief: FHWA LTBP Workshop to Identify B

Substructure Performance Issues (Web and Pri

• Newsletter: 2 Issues
LTBP Products ‐ Publication

Documents Due Out In Next 6 Months:

• Report: LTBP Bridge Performance Primer

• TechBriefs:

 LTBP Bridge Performance Primer

 FHWA LTBP Industry Day

 LTBP High Priority Bridge Performance Issu

• Newsletters:

 Issue #3

 Issue #4
Protocols—Identification and Publishing

• Needed for Consistent Data Collection

• 115 Identified or Written to Date

• Protocols

= Living Documents

• Publish New Report Every

2 Years

• Publish Interim on Web Between Reports

• Encourage State DOTs

& Academia to Use
Presentation Outline

• News and Milestones• Meetings with the States

• Publications• Timelines of Bridge Practices
Bridge Practices Timeline

(LTBP Low‐Hanging Fruit)

Creating National Bridge Practices Timelin

Standalone Reports (1960 to Present)• Met with Steel Industry

 Changes in Composition of Steel Changes in Coatings/Paint for Steel Bridge Changes in Steel Bridge Detail
Bridge Practices Timeline

(LTBP Low‐Hanging Fruit)

Creating National Bridge Practices Timelin

Standalone Reports (1960 to Present)• Met with Concrete Industry

 Changes in Mix Components—Cement, Ce

Materials, and Additives

 Changes in Coatings/Types of Rebar Changes in Concrete Bridge Details—Ex: C
Bridge Practices Timeline

(LTBP Low‐Hanging Fruit)

Creating National Bridge Practices Timelin

Standalone Reports (1960 to Present)• Working with Each State

 When Did State Adopt/Change Steel and 

Bridge Practices?

 How and When Have Deck Practices Chan When Did State Use Overlay Types? When Did State Use Different Types of Be

Deck Joints?
Georgia DOT Deck Cover

Pre 1970 2”1970‐1985 2 1⁄2” – Northern Half

2” – Southern Half

1985‐Present *2 3⁄4” – Northern Half

*2 1⁄4” – Southern Half

* 1⁄4” added to facilitate deck grinding and grooving