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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

Florida - Pipe Advisory Group

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

Training - Webinars


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

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


2018 Drainage Manual 
Posted: November 1, 2017
2018 FDOT Drainage Design Manual


2017 Drainage Design Guide 
Posted: December 13, 2016
FDOT Drainage Design Guide - January 2017


Posted: August 12, 2014

Optional Pipe Materials Handbook - Provides guidance for the evaluation of optional materials - 1.3mb size
Posted: May 29, 2014

Design Guidance for evaluating hydroplaning potential


BMP Trains Model 
Posted: March 21, 2014

New tool to evaluate BMP efficiency

- Pre-Post nutrient loading analysis

- Offsite Bypass v Commingling

- BMAP Credits


LRFD Webinar - Hosted by Rick Jenkins, P.E.
Posted: March 26, 2014
Webinar explaining the new AASHTO LRFD pipe cover requirements