Illinois State Route 26 is one of the main north-south routes in Bureau County. This connects many areas of the county to the couty seat, Princeton. IL St Rt 26 passes through the following towns. Bureau Junction
Portions of IL St Rt 26 in Bureau County are labeled as the Bureau Valley Parkway.
IL St Rt 26 is multi-plexed in Bureau County. Interstate 180, at the Illinois River.