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Ch 1 over Lake Creekoverflow

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

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

Ch 1 over Lake Creekoverflow in Williamson County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1979, making it 46 years old at the 2025 inventory.
It carries about 600 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 60 of the 200 inventoried bridges in Williamson County rated fair (30.0%); 7 (3.5%) 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 124 ft
Location	SW Corp Lim J City
NBI structure number	100310300000000
Condition class	Fair

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