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Tr 87 over I-72

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

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

Tr 87 over I-72 in Piatt 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 1962, making it 63 years old at the 2025 inventory.
It carries about 125 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 95 of the 246 inventoried bridges in Piatt County rated fair (38.6%); 14 (5.7%) 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 223 ft
Location	4 Mi NE Monticello
NBI structure number	074003500000000
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 Madden Creek Trib	1971	22,800	Good
I-74 over Madden Creek Trib	1971	22,800	Fair
I-74 over Stream	1970	21,500	Fair
I-72 over Stream	1976	11,400	Fair
I-72 over Wolf Run	1976	11,400	Fair
I-74 (EB) over S Branch Salt Creek	1970	10,750	Fair