Proposed methodology for upgrading bridge barriers

The AS 5100 Bridge Design standard (Standards Australia 2007) provides requirements for multiple performance level barriers. Historical barriers constructed before 1970 generally do not meet current standards. This paper builds on ongoing previous research projects within VicRoads which include the VicRoads research report on "Improving existing bridge barriers" (Colosimo 2004a) and the ARRB Conference paper on "Bridge barriers - towards national standards” (Colosimo 2006). The report describes typical details of substandard barrier types in Victoria and classifies them into various performance levels. This paper updates details and practices for retrofitting or upgrading bridge barriers by strengthening to the new MASH (AASHTO 2009) heavier test vehicle performance requirements. It also includes updates to the higher performance level barriers as affected by changes in size and mass of local vehicles since the AS 5100 standard implementation as incorporated in the new draft AS 5100 Bridge Design standard (Standards Australia 2014). The paper introduces a methodology for upgrading such barriers by considering both risk and cost aimed at facilitating such improvements. The barrier retrofit upgrading proposals detailed are intended to align with the changing roadside vehicle environment in order to improve roadside safety.

• Record URL:
  • http://arrbknowledge.com
• Authors:
  • Colosimo, V
• Conference:
  • Austroads Bridge Conference, 9th, 2014, Sydney, New South Wales, Australia
• Publication Date: 2014-10

Language

• English

Media Info

• Pagination: 13p
• Serial:
  • Issue Number: 7.4

Subject/Index Terms

• TRT Terms: Bridges; Guardrails; Improvements; Maintenance; Maintenance management; Performance; Standards
• Uncontrolled Terms: Safe systems (roads)
• Geographic Terms: Australia; Victoria
• ATRI Terms: Australian standard; Bridge; Maintenance management; Performance; Safety fence
• ITRD Terms: 1686: Safety fence; SPECIFICATION (STANDARD)
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01550463
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Jan 21 2015 11:39AM