In the 1960s a runaway truck struck the south portal of the bridge, causing severe damage that forced the bridge's permanent closure.

This runaway truck ramp that enables vehicles that are having braking problems to safely stop.

In the first 9 mi, designated as a scenic byway, it features mostly six travel lanes and three runaway truck ramps along its eastbound.

The southbound side has 2 runaway truck ramps.

There are three safety ramps (runaway truck ramps) that are used for if a truck or heavy vehicle has lost control of speed or their brakes have failed.