Hefner

Plaintiff Kimberly Hefner was seriously injured in an automobile accident. She sued (in addition to the driver of the car that collided with hers) Sacramento County (defendant) alleging the defective design of the intersection at which the accident occurred constituted a dangerous condition of property that caused the collision. The trial court granted defendant’s motion for summary judgment on the ground it was immune from liability arising out of the defective design of improvements to public property. (Gov. Code, § 830.6; all further statutory references are to the Government Code unless otherwise indicated.) Plaintiff appeals. We shall conclude that the expert opinions of two civil engineers constitute “any substantial evidence upon the basis of which ... a reasonable public employee could have adopted the . . . design . . . .” (Ibid.) We shall therefore affirm the judgment on the ground defendant is entitled to immunity under section 830.6.

Facts

U Street (later renamed Antelope Road) is a through street running east-west. Don Julio Boulevard runs north-south; its northern terminus is at U Street, where a T-intersection is formed. At the time of the accident, a…