![]() ![]() Both the first and second segments were structurally deficient and required removal and replacement. Box culverts are easier to construct and stronger as compared to slab culverts. The cushion is increased on the top slab with an increment of 0.5 m and restricted up to 6 m. Research findings indicate that damage to RC culverts under high fill is not typically caused by failure to the subgrade layer under the culvert foundation, due to the beneficial effects of foundation depth, foundation width and subgrade layer consolidation. ![]() as ground improvement for a hospitality station and box culvert (Barksdale et al. ![]() and then snag on fairly narrow holes in the embankment. Structural damage is probably caused by improper ground treatment strategies. ![]() embankments over organic silt and peat, bridge approach fills through. The Bridge Division issues and maintains culvert standard details for cast-in-place and precast reinforced concrete culverts. For this reason, no openings with widths over 1.0 m, such as culvert ends, should be permitted within the deflection distance of rails with standard deflections of 1. These accommodate a range of fill heights from direct traffic up to as high as about 30 ft. Proper strategies for preventing integrity problems are recommended based on the research. ![]()
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