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US 51(NB) over Main Drain Ditch

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

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

US 51(NB) over Main Drain Ditch 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 deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2015, making it 10 years old at the 2025 inventory.
It carries about 3,600 vehicles a day (traffic count year 2023).
Its listed owner is the state 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	Prestressed concrete stringer or multi-beam girder
Length	about 122 ft
Location	3.2MI S Assumption
NBI structure number	011003800000000
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