Grade Separation
Skip to main content
Texas Department of Transportation
Connecting You With Texas
  • Family
  • Jobs
  • Education
  • Opportunities
  • Attractions
  • Entertainment
  • Wide Open Spaces
  • History
  • Quality of Life
  • Sports
  • Parks
  • Shopping
  • Services
  • People
  • Wildflowers
  • BBQ
  • Shores
  • Schools
  • Rodeos
  • Music
  • Tacos
  • Adventure
  • Trails
  • Traditions
  • Safely
  • Sunsets
  • Culture
  • Festivals
  • Friends
  • Life
  • Possibilities
  • Legends

 


Grade separation is a method of aligning a junction of two or more roadway axes at different heights (grades) so that they will not disrupt the traffic flow on other transit routes when they cross each other. The grade separation can consist of a mixture of roads, bridges (overpasses or flyovers), tunnels (underpasses), footpaths, railways, canals or airport runways. Three primary roadway improvement objectives are accomplished using grade separated intersections: 1) increased capacity and uninterrupted flow, 2) increased safety and 3) reduced vehicle conflicts and delay.

Grade Separation illustration

Illustration: Grade Separation

 

Grade Separation photo

Photograph: Grade Separation

A. US 281 Mainlanes (Overpass)

B. SH 46 Intersecting Road (Underpass)

 

Copyright 2021  •  Texas Department of Transportation  •  All Rights Reserved  •  Disclaimer  •  Privacy & Security Policy  •  Accessibility
125 East 11th Street  •  Austin, Texas 78701