A roadway cross section is a vertical section of the ground and roadway at right angles to the centerline of the roadway, including all elements of a highway or street from the right-of-way line (lanes, shoulders, retaining walls, curbs, medians, pavement structure, roadside slopes, ditches, bike lanes and sidewalks).

Cross Section illustration

Illustration: Cross Section

 

Cross Section photo

Photograph: Cross Section

A. Roadway

B. Surface Course

C. Pavement Marking, white solid line

D. Base

E. Bed

F. Base Course

G. Sub-base

H. Subgrade

I. Embankment

J. Earth Foundation

K. Pavement Marking, white broken line