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I 57 SB & US 51 SB over Cache River

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

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

I 57 SB & US 51 SB over Cache River in Pulaski 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 5 (fair condition) on the 0-9 scale.
It was built in 1964, making it 61 years old at the 2025 inventory.
It carries about 6,300 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 59 of the 108 inventoried bridges in Pulaski County rated fair (54.6%); 10 (9.3%) 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 steel stringer or multi-beam girder
Length	about 181 ft
Location	3.8 Mi S Union Co
NBI structure number	077000500000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 57 & US 51 over Tr 7 Butter Ridge Rd	1995	12,600	Fair
I 57 over Stream	1967	11,900	Fair
I 57 NB & US 51 NB over Cache River	1964	6,300	Fair
I 57 NB & US 51 NB over Cache River Overflow	1964	6,300	Fair
I 57 SB & US 51 SB over Cache River Overflow	1964	6,300	Fair
I 57 NB & US 51 NB over Little Creek	1964	6,300	Poor