Bridge conditions in Rock Island County, Illinois
272 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Rock Island County tracks close to typical: 13 of its 272 inventoried bridges (4.8%) are rated poor, against a national rate of about 7%.
- 13 of the 272 bridges in Rock Island County, Illinois, are rated in poor condition (4.8%) in the 2025 National Bridge Inventory, as of .
- 125 bridges (46.0%) are rated good and 134 (49.3%) fair.
- The median Rock Island County bridge was built in 1984.
- The busiest poor-rated bridge is Il 5 WB (j Deere R over Fai 74 (built 1970), carrying about 38,900 vehicles a day.
Good 46.0% · Fair 49.3% · Poor 4.8% of 272 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 |
|---|---|---|---|
| Il 5 WB (j Deere R over Fai 74 | 1970 | 38,900 | Poor |
| 27TH St - Moline over Rock River Side Rd | 1938 | 11,400 | Poor |
| 27TH St.-moline over Stream | 1937 | 10,050 | Poor |
| East 10TH Ave. over Mill Creek | 1985 | 7,750 | Poor |
| Ch 16 over Case Creek | 1983 | 4,450 | Poor |
| 39TH Ave over Drainage Ditch | 1972 | 1,600 | Poor |
| 46TH Ave Dr over Drainage Ditch | 1973 | 1,600 | Poor |
| Road District 1 over Cooling Canal | 1973 | 1,250 | Poor |
| 47 Th Ave Dr over Drainage Ditch | 1973 | 875 | Poor |
| 127TH Ave (ch 55) over Mill Creek | 1993 | 600 | Poor |
| Tr 108 over Mill Creek | 1963 | 350 | Poor |
| Road District 186 over Cooling Canal | 1973 | 250 | Poor |
| County Hwy 50 over Meridosia Ditch | 1984 | 250 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 74 EB over Mississippi River | 2021 | 39,050 | Good |
| I 74 WB over Mississippi River | 2020 | 39,050 | Good |
| Il 5 WB (j Deere R over Fai 74 | 1970 | 38,900 | Poor |
| Il 5 EB (j Deere R over Fai 74 | 1970 | 38,900 | Fair |
| Fai 80 over Miss R Ill 84 & RR | 1967 | 32,200 | Fair |
| IL5 over Creek | 2012 | 32,100 | Good |
| Fai 280 over Mississippi River | 1970 | 28,100 | Fair |
| Il 5 WB (j Deere R over 27TH St-moline | 1966 | 27,800 | Fair |
| Il 5 EB (j Deere R over 27TH St-moline | 1966 | 27,800 | Fair |
| IL5 John Deere Exw over Drainage Ditch | 1987 | 27,800 | Fair |
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.