Roads of the Mid-South & West > Highways of the State of Illinois > Illinois State Route 51-100 > Illinois State Route 78 > Illinois State Route 78, Peoria County

Illinois State Route 78 Peoria County

Illinois State Route 78 is the main north-south route in the far western portion of Peoria County.

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IL St Rt 78 passes through the following towns in Peoria County.
Laura

Elmwood

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IL St Rt 78 is multi-plexed in Peoria County.
U.S. Rt. 150, near Laura.

Illinois State Route 8, near Elmwood.

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IL St Rt 78 crosses the following highways in Peoria County.
Illinois State Route 90, north of Laura.

U.S. Rt. 150, near Laura.

U.S. Rt. 150, near Brimfield.

Interstate 74, near Brimfield. (NO INTERCHANGE)
Illinois State Route 8, near Elmwood.

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A junction marker on WB IL St Rt 90.

SB IL St Rt 78 south of IL St Rt 90.

SB IL St Rt 78 at Laura.

WB U.S. Rt. 150/NB IL St Rt 78 at Scotland Prairie Road.

WB U.S. Rt. 150/NB IL St Rt 78 north of Martin Road.

A BGS on WB I-74.

NB IL St Rt 78 north of IL St Rt 8.

EB IL St Rt 8/NB IL St Rt 78 in Elmwood.

EB IL St Rt 8/NB IL St Rt 78 at the Knox/Peoria County Line.

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26 January 2026