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Bridge conditions in Pope County, Illinois

87 inventoried bridges · 4 rated poor · 2025 National Bridge Inventory

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

Pope County tracks close to typical: 4 of its 87 inventoried bridges (4.6%) are rated poor, against a national rate of about 7%.

4 of the 87 bridges in Pope County, Illinois, are rated in poor condition (4.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
58 bridges (66.7%) are rated good and 25 (28.7%) fair.
The median Pope County bridge was built in 1989.
The busiest poor-rated bridge is Ill 145 over Hayes Creek (built 1947), carrying about 1,200 vehicles a day.

Good 66.7% · Fair 28.7% · Poor 4.6% of 87 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Ill 145 over Hayes Creek	1947	1,200	Poor
Ill 145 over Stream	1947	1,150	Poor
Ill 147-fas 932 over Cnic RR	1941	400	Poor
Tr 84 over Bay Creek Ditch	1986	50	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Ill 34 over Gibbons Creek	1924	2,350	Fair
Ill 34 over Trib to Gibbon Creek	1991	2,350	Good
Ill 34-fap 778 over Unnamed Stream	2011	2,350	Good
Ill 146 over Lusk Creek	1964	2,150	Fair
Ill 145 over Bay Creek Ditch	1982	1,750	Fair
Il 145 over Bay Creek	2024	1,750	Good
Ill 145 over Hills Branch	1932	1,750	Fair
Il 146-fap 885 over Miller Creek	2002	1,550	Good
Ill 146 over Hills Branch	1928	1,450	Fair
Ill 34 over Unnamed Stream	2011	1,400	Good

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Illinois: Illinois bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.