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Ch-42 over Trib to Spring Creek

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

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

Ch-42 over Trib to Spring Creek in Iroquois 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 8 (very good condition) on the 0-9 scale.
It was built in 2015, making it 10 years old at the 2025 inventory.
It carries about 75 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 258 of the 568 inventoried bridges in Iroquois County rated good (45.4%); 83 (14.6%) 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	Steel stringer or multi-beam girder
Length	about 80 ft
Location	3.5 Miles E Gilman
NBI structure number	038401200000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-57 over Dranage Ditch	2015	18,100	Fair
I-57 over Dranage Ditch	2015	18,100	Fair
I-57 NB & SB over Prairie Creek	2015	18,100	Fair
Fai-57 over Stream	1971	17,600	Fair
I-57 SB over Langan Creek	2013	9,550	Fair
Fai-57 NB over Langan Creek	2014	9,550	Fair