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Ill 177 over E Trib Grand Pt Crk

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

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

Ill 177 over E Trib Grand Pt Crk 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 culvert, rated 8 (very good condition) on the 0-9 scale.
It was built in 1995, making it 30 years old at the 2025 inventory.
It carries about 1,600 vehicles a day (traffic count year 2023).
Its listed owner is the state 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

Component	Rating (2025)	FHWA scale meaning
Culvert	8	Very good condition


Structure	Continuous concrete culvert
Length	about 31 ft
Location	7.2MI E Jct Il 127
NBI structure number	095200900000000
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