Review and revision of overload permit classification.

Details

• Creators:
  Mlynarski, Mark ; Spangler, Bryan ; Rogers, Hal
• Corporate Creators:
  Michael Baker Jr., Inc.
• Subject/TRT Terms:
  • Trucks
  • Permits
  • Bridges
  • Overweight loads
  • Oversize loads
  • Load factor
  • Size and weight regulations
  • Trucks--Weight--Safety regulations
  • Trucks--Sizes--Safety regulations
  • Load factor design
  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.
  More +
• Format:
  PDF
• Funding:
  2010-0317
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25679/dot_25679_DS1.pdf
• File Type:
  [PDF - 4.39 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:e0f6372807ddd2983475a386aaaac84350d9d1cc5cbc69ec362bff66165bf554cb914a9df8a644cc353eb18c5a193e3b039e46cb9e91ba9cd4704ee6cd46a9ca