Lake Charles sits on the shore of its namesake lake along the Calcasieu River in southwest Louisiana, about midway between Lafayette and the Texas line. I-10 runs through the city and crosses the Calcasieu River on a tall, steep, aging bridge that is one of the most notorious spots on the whole interstate. I-210 loops around the south side, crossing Prien Lake on its own high bridge. US 90 runs east-west through town, US 171 heads north through Moss Bluff toward DeRidder, and LA 14 runs southeast toward Lake Arthur. Prien Lake and the Calcasieu River shape the south side, and the lakefront drive along downtown is a popular route for locals.
Inside the city, Ryan Street, Lake Street and Nelson Road are the main north-south corridors, and Prien Lake Road, McNeese Street and Sale Road carry crosstown traffic on the south side. The I-10 bridge backs up at rush hour and whenever there's a wreck, and plant shift changes put heavy traffic on I-10, I-210 and the roads to Westlake and Sulphur. Much of the city is flat and low, so heavy rain can flood streets quickly. Most neighborhoods have driveways and carports, which helps with on-site work. Sale Road and McNeese Street get busy around the university when classes change.
Lake Charles Regional Airport sits on the south side, and Chennault International Airport, a former air base on the east side, handles aircraft maintenance and cargo. Lake Charles Transit runs buses across the city, but most people drive, many working long shifts at the petrochemical plants and LNG facilities in Westlake, Sulphur and Cameron Parish. During plant turnarounds, large crews of contractors arrive at once, and hotels and RV parks fill with work trucks that need to stay running.