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Ch 9 Fas 1647 over Oak Branch

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

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

Ch 9 Fas 1647 over Oak Branch in Christian County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1977, making it 48 years old at the 2025 inventory.
It carries about 175 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 58 of the 320 inventoried bridges in Christian County rated good (18.1%); 55 (17.2%) 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	Continuous steel stringer or multi-beam girder
Length	about 86 ft
Location	4MI NW Assumption
NBI structure number	011328500000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Il 29 over Panther Creek	2005	12,200	Good
Il 29 NB over Clear Creek	2005	8,550	Fair
Il 29 SB over Clear Creek	2005	8,550	Good
Il 29 over Clear Creek	2005	8,550	Good
Il 29 over Ditch	2012	8,100	Good
Il 29 over Drainage	2012	8,100	Good