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Section 4(f) Guidance

Larix trees
Parkland adjacent to highway.

This web page describes how WSDOT works with FHWA to evaluate potential highway impacts to public parks, recreation areas, wildlife or water fowl refuges, or historic sites. This process is required by Section 4(f) of the federal Department of Transportation Act (49 USC 303).

The information on this page is designed for a technical audience.

WSDOT's policy is to comply with FHWA's procedure for completing a Section 4(f) analysis. Chapter 457 of the Environmental Procedures Manual provides policy guidance.

Process For Section 4(f) Analysis

Resources

  • Chapter 457 WSDOT EPM ( Environmental Procedures Manual) - describes the WSDOT policy and requirements
  • FHWA Technical Advisory "T 6640.8A" - provides the current procedures and formats for preparing a Section 4(f) document.
  • AASHTO Practioner's Handbook for Complying with Section 4(f) of the US DOT Act. This link takes you to the AASHTO website where you can download a copy of the handbook.

Parcels purchased with Land and Water Conservation Land Act funds require additional work to convert land to transportation uses. Procedures are given on the Land Use web page.