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Fas 637 (ch 21) over Br of Flat Branch

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

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

Fas 637 (ch 21) over Br of Flat Branch in Shelby 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 9 (excellent condition) on the 0-9 scale.
It was built in 2023, making it 2 years old at the 2025 inventory.
It carries about 800 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 184 of the 335 inventoried bridges in Shelby County rated good (54.9%); 26 (7.8%) 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 60 ft
Location	2 Mi E of Moweaqua
NBI structure number	087360100000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Fap 325 (il 16) over Swafford Branch	1991	8,200	Fair
Fap 325(IL 16) over Kaskaskia River	1975	6,500	Fair
Fap 325(ILL 16) over Robinson Creek	1967	5,200	Fair
Fap 325(ILL 16) over Stream	1924	4,800	Fair
US 51 (fap 322) over Long Grove CR.	2002	4,800	Fair
US 51 (fap 322) over Long Grove CR.	2002	4,800	Fair