The Thomas Johnson Bridge seems to affect us all at some time or another. Whether we are going to St. Mary's for shopping at Target, Walmart, Best Buy or night out to dinner at Outback, Olive Garden or the newly opened Red Robin. If you work in St. Mary's and live in Calvert County as many employees affiliated with Patuxent Naval Air Systems Command . I hope new gadget this is helpful for the ride to and from work. Just click on link provided below if you would like to check it out.