This right hand read reaches southbound drivers on I-170 at the St. Charles Rock Road exit. Commuters include residents from St. Charles County, North St. Louis County and Mid-St. Louis County, and anyone leaving Lambert-St. Louis International Airport. This sign is also seen when traveling toward an affluent residential/business district in Clayton, Missouri. Nearby Employers: Boeing, Enterprise Holdings, Dr. Pepper Snapple Group, Express Scripts and The University of Missouri St. Louis. I-170 is one of the main connector arteries in St. Louis providing access to University City, Clayton, Brentwood, Midtown and I-70 to access Lambert International airport. It is most heavily traveled by local St. Louis residents.