Only Load Factor analysis is acceptable for most off-system structures; Allowable Stress methods should only be used for timber and masonry bridges. The recently updated Texas Bridge Load Rating Program (TBLR-LFR) is acceptable for most off-system bridges as it calculates load ratings using Working-Stress analysis for timber elements and Load Factor analysis for steel or concrete elements. The TBLR-LFR program will give an Inventory (INV) and Operating (OPR) rating for H, HS, and only Operating (OPR) for AASHTO Legal Vehicles, SHV, and EV. For all timber, steel, and truss bridges, document calculations for load ratings of all structural elements that apply, including the deck, stringers or beams, truss members, bent caps, and piling or columns. Use Figure 6-6, applying the H-loading to the table, to select the proper load posting sign type and weight limits.