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Ill 100 over Wolf Run Creek

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

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

Ill 100 over Wolf Run Creek in Scott County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1931 and reconstructed in 1988, making it 94 years old at the 2025 inventory.
It carries about 2,050 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 38 of the 99 inventoried bridges in Scott County rated fair (38.4%); 7 (7.1%) 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	Continuous steel stringer or multi-beam girder
Length	about 102 ft
Location	at Bluffs
NBI structure number	086000600000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Fai 72 over Tr 44	1987	9,900	Good
Fai 72 over Drainage Ditch	1986	9,900	Fair
Fai 72 EB over Ill 100	1981	4,950	Fair
Fai 72 WB over Ill 100	1981	4,950	Fair
Fai 72 EB over Tr 55	1986	4,950	Good
Fai 72 WB over Tr 55	1986	4,950	Good