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Monster Ln-tr 520 over W Br Copperas Creek

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

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

Monster Ln-tr 520 over W Br Copperas Creek in Fulton County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1990, making it 35 years old at the 2025 inventory.
It carries about 75 vehicles a day (traffic count year 2020).
Its listed owner is a town or township highway agency.
It is one of 120 of the 209 inventoried bridges in Fulton County rated fair (57.4%); 44 (21.1%) 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	Prestressed concrete multiple box beam
Length	about 63 ft
Location	W 1/2-33-t7nr5e
NBI structure number	029418000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 24 / Il 9 over Copperas CR	2022	7,750	Fair
US 136 over Lacy Ditch	1936	5,250	Fair
US 136 over Illinois River	1936	5,250	Poor
Ill 9 over Big Creek	1997	4,100	Fair
Ill 78 over W.br Copperas C	1929	3,800	Poor
Ill 78 over Mid Br Copperas CR	1964	3,800	Fair