As more structures reach the end of their design lives, new solutions must be developed to facilitate a more suitable replacement. The box culvert standard currently used by the Kansas Department of Transportation (KDOT) is likely to receive increased scrutiny from federal and state environmental regulators in the near future.Īdditionally, multiple-cell box culverts present a maintenance challenge, since passing driftwood and debris are frequently caught in the barrels and around cell walls. This has prompted environmental regulations restricting construction of traditional, four-sided box culvert structures in rivers and streams populated by protected species. Consequences include an aquatic environment less friendly to the passage of fish and other organisms. Concrete box culvert floor slabs are known to have detrimental effects on river and stream hydraulics.
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