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Tr 23 over Lake Creek

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

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

Tr 23 over Lake Creek in Williamson 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 1985, making it 40 years old at the 2025 inventory.
It carries about 275 vehicles a day (traffic count year 2021).
Its listed owner is a town or township highway agency.
It is one of 133 of the 200 inventoried bridges in Williamson County rated good (66.5%); 7 (3.5%) 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 111 ft
Location	2 Miles Neherrin
NBI structure number	100312700000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
WB Il 13 over BNSF RR	2015	26,300	Good
EB Il 13 over BNSF RR	2014	26,300	Fair
WB Il 13 over Marathon Dr	2015	26,300	Good
EB Il 13 over Marathon Dr	2014	26,300	Good
Ill 13 over Stream	1959	26,300	Good
Ill 13 EB over Craborchard Lake	1964	25,600	Poor