The transcontinental Lincoln Highway was established through DeKalb in 1913. The first "seedling mile" of concrete pavement was built in 1914 at Malta, six miles west of DeKalb. The rest of Lincoln Highway across DeKalb County was paved in 1920. The highway is now part of Illinois Route 38. The main north-south highway through DeKalb is Illinois Route 23, which forms an unusual intersection of two state highways and a major railroad at the corner of Fourth and Lincoln. Interstate Highway 88, part of the Illinois Tollway system, was completed to DeKalb around 1975 and passes just south of town, where there are two toll plazas and a service oasis that includes restaurants and a gas station. Via the tollway, DeKalb is west of Aurora and west of downtown Chicago.