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Tr 59 over Plum Creek

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

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

Tr 59 over Plum Creek in Washington 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 7 (good condition) on the 0-9 scale.
It was built in 1982, making it 43 years old at the 2025 inventory.
It carries about 450 vehicles a day (traffic count year 2024).
Its listed owner is a town or township highway agency.
It is one of 116 of the 234 inventoried bridges in Washington County rated good (49.6%); 14 (6.0%) 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 86 ft
Location	0.25 Mi E Okawville
NBI structure number	095316000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Fai 64 EB over Kaskaskia River	1971	15,500	Fair
Fai 64 WB over Kaskaskia River	1971	15,500	Fair
Fai 64 EB over Kaskaskia R Overflow	1969	15,500	Good
Fai 64 WB over Kaskaskia R Overflow	1969	15,500	Good
Fai 64 WB over Plum Creek	1969	15,500	Fair
Fai 64 EB over Plum Creek	1969	15,500	Fair