Review and revision of overload permit classification.

Details

• Creators:
  Mlynarski, Mark ; Spangler, Bryan ; Rogers, Hal
• Corporate Creators:
  Michael Baker Jr., Inc.
• Subject/TRT Terms:
  Bridges Load Factor Load Factor Design Oversize Loads Overweight Loads Permits Size And Weight Regulations Trucks Trucks--Licenses Trucks--Sizes--Safety Regulations Trucks--Weight--Safety Regulations

  More +
• Publication/ Report Number:
  RC-1589
• Resource Type:
  Tech Report
• Geographical Coverage:
  Michigan
• Edition:
  Final report.
• Corporate Publisher:
  Michigan. Department of Transportation
• Abstract:
  The Michigan Department of Transportation (MDOT) allows trucks that exceed their legal loads to cross
  
  bridges if they apply and are approved for a permit. More than 30,000 permits have been processed each
  
  year since 2002, providing a vital service to Michigan's economy. However, the permitting system must
  
  be robust enough to ensure that the safety of the motoring public is maintained by accounting for
  
  overload vehicles without unduly restricting commerce.
  
  Currently, structures are placed into Overload Class by checking all service limit states as identified by
  
  the 2005 MDOT Bridge Analysis Guide (BAG) with 2009 Interim Updates and the 2010 American
  
  Association of State Highway and Transportation Officials (AASHTO) Manual for Bridge Evaluation (MBE)
  
  with interims. Vehicles are placed into the Overload Class by comparing the maximum moments of the
  
  vehicle for span lengths between 15-ft to 160-ft to the moments produced by the 20 standard overload
  
  configurations provided by the BAG. Structures that do not pass an overload class would be marked as
  
  restricted and require a specific analysis, increasing the turn-around time for the client and the analysis
  
  cost incurred by MDOT.
  
  The current software used for the analysis of the structures is a simplified solution that was developed
  
  well over 20 years ago when more robust solutions were not feasible. With the capability of modern
  
  computing and the availability of bridge software solutions, this research project looks at solutions for
  
  updating the bridge analysis as well as the overall overload permit classification process.
  
  
• Format:
  PDF
• Funding:
  2010-0317
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:d6919e79f658dc5b760b2dfa30d2b5fb130b74294713f40047589a0aa5542cbb
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25679/dot_25679_DS1.pdf
• File Type:
  [PDF - 4.39 MB ]