state route mile route connects state route mexico united_states border southern terminus border near baja california northern terminus near california route assigned area remained intact route description state route road begins border community baja california border crossing handled roughly percent traffic baja california california route progresses northward passing large commercial district california highway heads intersection thing road turns northeast commercial district route continues northeast intersecting surroundings highly undeveloped continues intersection short distance designation ends right way merges entire route national_highway_system network roadways important country economy defense mobility annual average daily traffic aadt northern terminus southern terminus highest aadt highway history original alignment routes assigned designated state highway renumbering officially defined south end fallen leaf lake route near camp richardson later removed road town existed border crossing originally opened board proposed moving road shorter level ground opposition local residents businesses favored old road route road remained current routing assigned route remained virtually unchanged border crossing expanded opening including truck scales completed past expansions crossing having completed future improvements planned connect ports entry truck bypass improve security scheduled completion major intersections entire route
California State Route 188