Presentation on theme: "Update - Subcommittee on Bridges and Structures Kelley Rehm, PE July 2011."— Presentation transcript:
Update - Subcommittee on Bridges and Structures Kelley Rehm, PE July 2011
Subcommittee on Bridges and Structures http://bridges.transportation.org Twenty Technical Committees Responsible for over 75 publications including the LRFD Bridge Design Guide Annual meeting in May of each year to ballot changes to all Bridge and Structure related documents May 15-19 th in Norfolk, VA
Latest Bridge Publications News Publication of the AASHTO Guide Manual for Bridge Element Inspection Replaces CoRE Element Guide CoRE Guide will be sun-setted after this year New Website that will hold information about the implementation of the Element Inspection Guide – www.bridges.transportation.org/pages/bridgin spectionadnmanagementinformation.aspx www.bridges.transportation.org/pages/bridgin spectionadnmanagementinformation.aspx
T-18 Bridge Management, Inspection and Rehabilitation “ Migrator Software” – Converts CoRE Elements into the new Element Inspection format Working to develop training through FHWA and NHI for the new Manual Working with FHWA to update the bridge inspection course, Bridge Inspection Manual and the Bridge Coding Guide
T-9 Bridge Preservation National Bridge Management, Inspection and Preservation Conference October 31, 2011 St. Louis, MO www.tsp2.org www.tsp2.org Coordination with Preservation Groups – TSP2. Expert Task Group on Bridge Preservation, FHWA “23 Metrics”
Adopted Bridge Preservation Definitions 1. Endorsement to the AASHTO Board of Directors to add to the AASHTO Glossary: Bridge Preservation Actions or strategies that prevent, delay or reduce deterioration of bridges or bridge elements, restore the function of existing bridges, keep bridges in good condition and extend their useful life. Preservation actions may be preventive or condition-driven. 2. Endorsement to SCOM, Bridge Technical Working Group, to add to the AASHTO Maintenance Manual: Bridge Preservation Actions or strategies that prevent, delay or reduce deterioration of bridges or bridge elements, restore the function of existing bridges, keep bridges in good condition and extend their useful life. Preservation actions may be preventive or condition-driven.
Adopted Bridge Preservation Definitions Commentary: Effective bridge preservation actions are intended to address bridges while they are still in good or fair condition and before the onset of serious deterioration. An effective bridge preservation program: employs long-term network strategies and practices that are aimed to preserve the condition of bridges and extends their useful life; has sustained and adequate funding sources; has adequate tools and processes to ensure that the appropriate treatments are applied at the appropriate time. An effective bridge preservation program may include, but is not limited to, the following components: Qualifying parameters for bridge types and related conditions, i.e. bridge elements or components that are in fair to good condition such as concrete decks, coated steel elements, substructure elements in a marine environment, etc. Appropriate treatments such as cleaning, installation of deck overlays, coating of steel elements, installation of cathodic protection and prevention systems, etc. Regular needs assessment to identify, prioritize, and estimate the cost of planned work Best practices for Bridge Preservation include: The method of identification of needs is uniform, specific and repeatable; and based on element level condition data. First level national performance measures are used to set program funding levels and second level agency specific performance measures are used to set objectives for the full range of actions (maintenance, preservation, rehabilitation, replacement) to optimize bridge conditions. Prioritization process integrates agency objectives for network condition levels and individual bridge risk. Verification and feedback on work completed. A significant portion of resources determined by agency network goals are directed to preservation actions. Agency management champions the preservation of assets.
Bridge Technical Service Programs Bridge Specification Maintenance 28 States Participating Transportation System Preservation (TSP2) – Bridges and Pavement 39 States Participating Invoices – July 2012 for coming year – sent to CEO / Commissioner’s office
States Participating in 2011 $10,000 / State 28 States Participating As of June 1
39 Participating States TSP2 $20,000 per state As of June 1
NTPEP NTPEP is very close to launching the Polymer Concrete Overlay program with both field and laboratory evaluation of these products. Field evaluation will be done in KY – Materials and Maintenance have been working together to determine locations for the evaluations. If there are products or items that SCOM would like to have evaluated – you can ‘champion’ them (i.e. provide someone with the technical expertise to jump start the process) – this does not mean you have to join another committee – but do need to provide expertise to develop a work plan for evaluations or manufacturing audits.
New Technology and Research T-11 Research NCHRP 20-07 Programs Monitoring other research US DOT RITA Project Small Format Aerial Photography
96 sf oil and grease Joint size 2.25 inches 59.5’ Saturated concrete Debris The InSiteful Imagery® ADVANTAGE: ArcGIS software is used in connection with the highest quality digital cameras to capture sub-inch resolution imagery and to perform detailed image analysis at the micro-material level, while being able to maintain high situational awareness of macro-level surrounding variables affecting bridge wear and tear. All done without mobilizing ground crews and without any traffic control SUB-INCH RESOLUTION