USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Highway Design Tools

The following design aids and information may be used to develop a roadway design and prepare PS&E packages.  Division tools are also available at left.

Roadway Geometry

The following spreadsheets are intended to assist Highway Design professionals in completing lines and grades. All results should be verified by a Professional Engineer. Unless otherwise stated the spreadsheets make use of AASHTO's A Policy on Geometric Design of Highways and Streets (the Green Book). All spreadsheets are provided as-is.


  • USGS StreamStats - provides an assortment of analytical tools that are useful for a variety of water-resources planning and management purposes

Roadside Barriers

Traffic Engineering