UDOT

Chapter 4 – Drainage https://drive.google.com/file/d/1D0WOUFpMX7h5AVoY028dZaJTxRuv1Rdi/view

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Well designed and constructed drainage systems are a critical component of ensuring
the longevity of a highway. Roadway drainage involves collecting surface runoff and
other water sources to convey water to designated areas, ensuring traffic safety and
protecting the roadway itself from damage. Water quality is an important concern not
only during construction but after as well as roadway runoff contributes to non-point
source pollution. Inspectors must ensure that adequate temporary best management
practices (BMPs) are in place during construction and that long term BMPs are
constructed according to plan.
Many sections in this chapter closely follow a corresponding section in the 2017
Standard Specifications. However, the intent of this chapter is not to repeat the
specifications, but to offer guidelines for inspectors to ensure compliance and to
measure work done. All section numbers refer to the 2017 Standard Specifications.
As explained in Chapter 1, the first duty of an inspector is to become thoroughly familiar
with the contract plans, standard plans, special provisions, standard specifications, and
any right-of-way agreements that apply to the project. This guide is not a substitute for
a thorough understanding of project plans and standard specifications.