Keywords: Axle groups.svg created with Inkscape Bridge formula axle groups Derivative work based on Figure 4 of http //ops fhwa dot gov/freight/publications/brdg_frm_wghts/index htm The brochure is available at http //purl access gpo gov/GPO/LPS76061 2005-04-23 ErgoSum88 All images on the DoT site are in the public domain unless noted http //www fhwa dot gov/webpolicies/linktofhwa htm Bridge elements |