U.S. Federal Route 40 is the only east-west surface route in Effingham County. This runs just south of Interstate 70 on the eastside of the county. On the westside, it runs just north of I-70. U.S. Rt. 40 passes through the following towns in Effingham County. Altamont Keptown Funkhouser Effingham
A junction marker on EB U.S. Rt. 40/SB IL St Rt 128. Photo courtesy: Paul Dienhart A BGS on WB U.S. Rt. 40; NB IL St Rt 32; WB IL St Rt 33. EB U.S. Rt. 40/IL St Rt 33 in Effingham.