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Mill St. over Fox River

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

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

Mill St. over Fox River in Kane 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 1984, making it 41 years old at the 2025 inventory.
It carries about 6,500 vehicles a day (traffic count year 2023).
Its listed owner is a city or municipal highway agency.
It is one of 162 of the 339 inventoried bridges in Kane County rated fair (47.8%); 24 (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	Prestressed concrete stringer or multi-beam girder
Length	about 285 ft
Location	Just W. of Ill 25
NBI structure number	045200700000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-88 WB over Fox R - RR - Il 25	1958	86,200	Fair
I-88 EB over Fox R - RR - Il 25	2008	86,200	Fair
I-90 over S Br Kishwaukee Riv	2014	76,200	Good
I-90 over Stream	1958	58,700	Good
I-90 over Sleepy Hollow Rd	2014	52,600	Good
I-90 over Sleepy Hollow Rd	2014	52,600	Good