Where does this sidewalk go? (https://www.openstreetmap.org/node/7073597907)

WSDOT's rendering (https://wsdot.wa.gov/sites/default/files/2023-06/I-5SteilacoomDuPontRdJBLM-Stage3-Design-visualization-Atkinson.JPG) shows it continuing off to the west, but this is just a freeway ramp. Is the rendering wrong, or does it connect to some parking lot etc. to the west?