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I-88 WB over Polo Road

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

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

I-88 WB over Polo Road in Whiteside 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 1972, making it 53 years old at the 2025 inventory.
It carries about 8,300 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 201 of the 278 inventoried bridges in Whiteside County rated fair (72.3%); 23 (8.3%) 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	Continuous prestressed concrete stringer or multi-beam girder
Length	about 110 ft
Location	2 Mi E Ill 40
NBI structure number	098008800000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Il 40 over Rock River	2012	19,800	Good
I-88 over Ditch	1975	13,100	Good
Fai 88 over Stream	1975	12,600	Fair
I-88 over Ditch	1975	12,500	Good
I-88 over Ditch	1975	12,500	Good
Il 40 Locust St over Stream	1987	11,100	Good