Illinois State Route 78 is the main north-south route through eastern Henry County. IL St Rt 78 passes through the following towns in Henry County. Kewanee
Annawan
IL St Rt 78 is multi-plexed in Henry County. U.S. Rt. 34, near Kewanee.
Junction sign on northern Henry County. Henry County Mile Marker on IL St Rt 78. A BGS on EB I-80. A BGS on EB I-80. A BGS on WB I-80. NB IL St Rt 78 in Annawan. SB IL St Rt 78 on the south side of Annawan. SB IL St Rt 78 south of Annawan. SB IL St Rt 78 north of Kewanee. SB IL St Rt 78 near Pizza Hut Field in Kewanee. SB IL St Rt 78 in Downtown Kewanee. EB U.S. Rt. 34/SB IL St Rt 78 in Downtown Kewanee. WB U.S. Rt. 34/SB IL St Rt 78 south of Kewanee.