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Fas-806 over Muddy Creek

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

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

Fas-806 over Muddy Creek in Lawrence County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1971, making it 54 years old at the 2025 inventory.
It carries about 225 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 74 of the 185 inventoried bridges in Lawrence County rated fair (40.0%); 42 (22.7%) 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 193 ft
Location	1 Mi NW Petrolia
NBI structure number	051312200000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Fap-327wb (US-50) over Fas-1827	1958	7,200	Poor
Fap-327eb (US-50) over Fas-1827	1958	7,200	Fair
Fap-327eb (US 50) over Beaver Pond Ditch	1957	7,200	Poor
Fap-327wb (US-50) over Beaver Pond Ditch	1957	7,200	Poor
Fap-327eb (US-50) over Allison Ditch No 1	1957	7,200	Poor
Fap-327wb (US-50) over Allison Ditch No 1	1957	7,200	Poor