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Ill 97 over Rock Creek

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

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

Ill 97 over Rock Creek in Menard 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 7 (good condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 3,900 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 36 of the 89 inventoried bridges in Menard County rated good (40.4%); 10 (11.2%) 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 stringer or multi-beam girder
Length	about 96 ft
Location	3.5M N Salisbury
NBI structure number	065001700000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Il 97/IL 123 over Hemp Factory Branch	1994	4,850	Good
Ill 123 over Sangamon River	1985	4,800	Fair
Ill 29 over Indian Creek	1957	4,200	Fair
Ill 97 & 123 over Rocky Branch Creek	1990	4,200	Good
Ill 97 over C&im RR	1939	2,750	Fair
Ill 123 over Indian Creek	1991	2,200	Good