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Tr-159 over Little Muddy

Clay County, Illinois · rated Poor in the 2025 National Bridge Inventory

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

Tr-159 over Little Muddy in Clay County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
It was built in 1977, making it 48 years old at the 2025 inventory.
It carries about 125 vehicles a day (traffic count year 2021).
Its listed owner is a town or township highway agency.
It is one of 24 of the 167 inventoried bridges in Clay County rated poor (14.4%); 24 (14.4%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Culvert	4	Poor condition

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

Bridge	Built	Vehicles/day	Condition
Fap-327 (US-50) over Stream	1969	5,200	Fair
Fap 328 (US 45) over Grove Creek	2009	5,200	Good
Fap 328 (US 45) over Buck Creek	2008	5,100	Fair
Fap-327 (US-50 EB) over Elm River	1965	4,950	Fair
Fap-327 (US-50 WB) over Elm River	1965	4,950	Fair
Fap-327 (US-50) over Cxst RR	1969	4,600	Fair