Concrete Highway Slab Lifting Case Study: Fargo, ND

Erosion under concrete slab highway and bridge approaches causes uneven, dangerous driving conditions.

Interstates 29 and 94 near Fargo, North Dakota, were in need of repair. The concrete slab highways were experiencing a common problem with this type of roadway—erosion underneath the slabs that left the highway lower in some spots causing uncomfortable, unsightly, and potentially dangerous driving conditions. Some of the erosion was on bridge approaches causing the concrete slabs to drop anywhere from two to four inches.