Culvert FEA (Finite Element Analysis) with 0.91m (3 ft.) of granular backfill, subject to a 307kN (69,000 lb.) per axle load exceeded the BCFS L-150 (GVW 136,090 KGs) off road truck load standard. Culverts were load tested in the field  with 56,000 lb. per axle which exceeds BCFS L-100 (GVW 90,680 KGs) and AASHTO H25 load.