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Il 26 over Yellow Creek

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

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

Il 26 over Yellow Creek in Stephenson 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1988, making it 37 years old at the 2025 inventory.
It carries about 12,600 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 126 of the 340 inventoried bridges in Stephenson County rated fair (37.1%); 11 (3.2%) 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 prestressed concrete stringer or multi-beam girder
Length	about 154 ft
Location	S Edge of Freeport
NBI structure number	089006200000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 20 EB over Sumner Creek	1959	12,700	Fair
US 20 WB over Wickham Creek	1983	12,700	Fair
US 20WB over Sumner Creek	1994	12,700	Good
US 20 EB over Wickham Creek	1999	12,700	Fair
US 20 & Private Rd over Silver Creek Trib	1959	12,700	Fair
Ill 26 (fap 316) over Pecatonica River	1983	12,500	Fair