Guides and manuals Manuals MnDOT LRFD Bridge Design Manual MnDOT Bridge Load Rating and Evaluation Manual Guides Implements of Husbandry Load Rating Guide (PDF) Implements of Husbandry Load Rating (PowerPoint) Implements of Husbandry Load Rating video (YouTube) LRFR Metal Pipe Structures Load Rating Guide (PDF) LRFR of In-Service Metal Pipe Structures Calculator (Excel) Inspecting to Load Rate in Service Steel Culverts (PowerPoint) Inspecting to Load Rate in Service Steel Culverts video (YouTube) LRFR Concrete Box Culvert Load Rating Guide (PDF) LRFR Concrete Box Culvert Load Rating Refinements Calculator (Excel) Concrete Box Culvert Load Rating Guide Rollout (PowerPoint) Concrete Box Culvert Load Rating Guide Rollout video (YouTube) LRFR Concrete Round Pipe and Pipe Arch Culvert Load Rating Guide (PDF) LRFR Reinforced Concrete Pipe Structure Calculator (Excel) Concrete Pipe Culvert Load Rating Guide Rollout (PowerPoint) Concrete Pipe Culvert Load Rating Guide Rollout video (YouTube) Timber Box Culvert Load Rating Guide (PDF) LFR Timber Box Culvert Converter Calculator (Excel) Timber Box Culvert Load Rating Guide Rollout (PowerPoint) Timber Box Culvert Load Rating Guide Rollout video (YouTube)