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US 51 over Icrr Atkrr

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

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

US 51 over Icrr Atkrr in Marion 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 1983, making it 42 years old at the 2025 inventory.
It carries about 4,050 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 90 of the 294 inventoried bridges in Marion County rated fair (30.6%); 22 (7.5%) 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 206 ft
Location	3.9 mi N IL 161 Centralia
NBI structure number	061007700000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Fai-57 over Raccoon Creek	1966	21,000	Good
Fai-57 over Br E Fork Kaskaskia	1970	18,100	Good
Fai-57 over S Trib E Br Kask Rvr	1969	18,100	Good
Fai-57 over N Trib E Br Kask Rvr	1969	18,100	Good
US 50 over Vermillion Creek	1994	10,300	Good
Fai-57 NB over Crooked Creek	1968	9,650	Poor