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Tr 51 over Dearcy Br.

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

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

Tr 51 over Dearcy Br. in Jersey 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 1994, making it 31 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2017).
Its listed owner is a town or township highway agency.
It is one of 64 of the 113 inventoried bridges in Jersey County rated good (56.6%); 6 (5.3%) 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 multiple box beam
Length	about 44 ft
Location	0.8 M N. Jerseyville
NBI structure number	042312300000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 67 SB over Piasa Creek	2012	12,100	Good
US 67 NB over Piasa Creek	2012	12,100	Good
US 67 over De Arcy Creek	1921	5,300	Fair
Il 100 (NB) over Piasa Creek	1997	5,150	Fair
Ill 100 (SB) over Piasa Creek	1997	5,150	Good
Ill 100 over Elsah Creek	1961	4,150	Poor