@article{ref1,
title="Load rating choice and longer combination vehicle impacts on the rural interstate bridge network",
journal="Journal of the transportation research forum",
year="1991",
author="Harrison, R. and Weissmann, J. and Barnhart, R.",
volume="32",
number="1",
pages="52-60",
abstract="The paper describes the results of a survey of U.S. State Highway Departments in which 60% of the 47 responding states recommended using the Inventory Bridge Rating for the operation of longer-combination vehicles.  Calculations for double 48 ft and triple 28 ft vehicle configurations show that the choice of bridge rating criterion dramatically affects predicted longer-combination vehicle impacts on the rural Interstate network.  Employing these vehicle types and the Inventory rather than Operating Rating on the rural Interstate network produces 309% more deficient bridges, 531% higher affected traffic volumes, and 335% higher replacement costs.  The replacement cost rating differential exceeds $6 billion, excluding user delay costs.<p />",
language="",
issn="1046-1469",
doi="",
url="http://dx.doi.org/"
}