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Fas-717 (ch-23) over Kaskaskia River

Fayette County, Illinois · rated Good in the 2025 National Bridge Inventory

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

Fas-717 (ch-23) over Kaskaskia River in Fayette County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 1978, making it 47 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 203 of the 356 inventoried bridges in Fayette County rated good (57.0%); 16 (4.5%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 193 ft
Location	4 Mi W Shobonier
NBI structure number	026329300000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Fai-70 over Owl Creek	1966	25,800	Fair
Fai-70 over Tr-32	1965	25,800	Fair
Fai-70 over Stream	1963	23,900	Fair
Fai 70 over Stream	1962	23,800	Fair
Fai-70 over Stream	1948	22,700	Fair
Fai-57 over East Fork Kaskaskia	1970	18,100	Fair