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Tr 41 (2100 N) over I-39 US 51

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

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

Tr 41 (2100 N) over I-39 US 51 in Woodford 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 5 (fair condition) on the 0-9 scale.
It was built in 1990, making it 35 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 139 of the 224 inventoried bridges in Woodford County rated fair (62.1%); 22 (9.8%) 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 296 ft
Location	3 Mi N of Ill 116
NBI structure number	102004800000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-74 over Rock Creek Tributary	1965	28,400	Fair
I 39/US 51 over Unnamed Stream	1992	18,700	Fair
I 39/US 51 over Unnamed Stream	1992	18,700	Fair
I 39/US 51 over Unnamed Stream	1992	18,700	Fair
I 39/US 51 over E Branch Panther Ck	1992	16,200	Fair
WB I-74 over Mackinaw River	1964	14,200	Poor