In some instances, stabilizing channel banks at a highway stream crossing can cause a change in the channel cross section and may alter the stream sinuosity winding upstream of the stabilized banks. Figure 7‑10 illustrates meander migration in a natural stream. If sinuosity increases due to artificial stream stabilization, then meander amplitude may increase. Meander radii in other parts of the reach may become smaller and deposition may occur because of reduced slopes. The channel width-depth ratio may increase as a result of bank erosion and deposition. Ultimately, cutoffs can occur.

Refer to

Design of Spur-Type Streambank Stabilization Structures

, and

Stream Stability at Highway Structures

, , for further design considerations, guidelines, and procedures for the various types of stream stabilization and meander countermeasures used and recommended by the department.