Roadway Design




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Bridge Scour Policy and Guidance

Thank you for visiting the Drainage Section site. The Central Office Drainage Section provides hydrologic, hydraulic, stormwater management, and coastal engineering services to ensure that Florida DOT provides a safe, economical transportation system that preserves the quality of Florida's environment.

The Drainage Section develops and updates policies, procedures, standards, specifications, and guidelines for these practice areas:

Coastal Engineering

District Information

Drainage Connection Permit

FHWA Hydraulics Engineering

Two-Dimensional Hydraulic Modeling for Highways in the River Environment

Florida - Pipe Advisory Group

Innovative Stormwater Information and Projects

Manual-Handbooks-Design Aids


- Hydraulic and Stormwater management design of drainage systems for roads and bridges


- Prediction of bridge hydraulics and scour for riverine and tidal waterways


- Design of bank protection and bridge scour countermeasures


- Prediction of wave climates and forces on bridge

Pipe Repair Matrix

Research Projects

Stormwater Management Academy



2022 Drainage Manual 
  Posted: October 29, 2021
  2022 FDOT Drainage Design Manual


 2021 Drainage Manual 
  Posted: October 30, 2020
  2021 FDOT Drainage Design Manual

Hydroplaning Research - BE570
  Posted: June 8, 2020 
  Hydroplaning Research - BE570 Enhanced Hydroplaning Analysis Tool, Report and CBT.

 2020 Drainage Manual 
  Posted: October 30, 2019
  2020 FDOT Drainage Design Manual

Culvert Service Life Estimator - 
 Posted: February 6, 2019
 New version

2019 Drainage Manual
  Posted: November 1, 2018
  2019 FDOT Drainage Design Manual