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Tr 23 over Prairie Ck

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

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

Tr 23 over Prairie Ck in Logan County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1964, making it 61 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2022).
Its listed owner is a town or township highway agency.
It is one of 27 of the 292 inventoried bridges in Logan County rated poor (9.2%); 27 (9.2%) 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


Structure	Prestressed concrete multiple box beam
Length	about 40 ft
Location	3 S .5 Mi E San Jose
NBI structure number	054540300000000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
I-55 over Hurlbut Creek	1974	34,900	Fair
I 55 & E&w Fr Rds over Wolf Creek	1944	33,125	Fair
I-55 over Drainage Ditch	1974	32,400	Fair
I-55 over Clear Creek	1976	21,600	Fair
I-55 over Drainage Ditch	1974	21,500	Fair
I-55 over Trib Lake Fork	1922	17,450	Fair