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Marine Road-FAS 77 over Silver Creek Ovrflw

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

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

Marine Road-FAS 77 over Silver Creek Ovrflw in Madison County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
It was built in 1923 and reconstructed in 1974, making it 102 years old at the 2025 inventory.
It carries about 800 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 231 of the 524 inventoried bridges in Madison County rated fair (44.1%); 46 (8.8%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	5	Fair condition

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

Bridge	Built	Vehicles/day	Condition
Fai 270 over Mississippi River	1966	46,200	Fair
I-270 EB & WB over Chain of Rocks Canal	2014	46,200	Good
Fai 270 EB over Mississippi River	2024	46,200	Good
Fai 270 over Water Main	1964	46,200	Good
I-55/70 over Brush Creek	1962	46,000	Fair
Fai 70 over Canteen Ck	1939	45,600	Good