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Ill 26 over Coon Creek

Lee County, Illinois · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Ill 26 over Coon Creek in Lee County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1981, making it 44 years old at the 2025 inventory.
It carries about 1,500 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 184 of the 373 inventoried bridges in Lee County rated fair (49.3%); 42 (11.3%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 104 ft
Location	3.2 Mi S of Amboy Rd
NBI structure number	052006100000000
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.

Bridge	Built	Vehicles/day	Condition
US 52 & Il 2 & Il over Rock River	2002	22,100	Fair
I 39&US 51 over Steward Creek Branch	1984	19,500	Fair
I 39&US 51 over Dry Run Creek	1982	19,100	Fair
I 39&US 51 over Stream	1984	19,100	Fair
I 39&US 51 over Harmon Creek South	1982	19,100	Fair
I 39&US 51 over Willow Creek	1983	18,700	Fair