When a water control facility has been constructed prior to the construction of a transportation project, and the project will cross the facility, TxDOT is responsible for the cost of construction and maintenance, at no expense to the owner, of the necessary structure, culvert, or siphon needed to serve the facility.

When an irrigation or flood control district, specifically authorized under the Statutes of Texas, desires to cross an existing highway with an irrigation canal or flood control facility, the irrigation or flood control district must provide for the cost of the construction and maintenance of the structures. Final approval of the structure’s design lies with TxDOT.

In the case of adjusting an existing crossing of a water control facility, TxDOT construction funds will bear the cost of the cross-drainage structure.