Bridge conditions in Monroe County, Iowa
131 inventoried bridges · 29 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 5 bridges in Monroe County is rated in poor condition: 29 of 131 on the federal inventory, one of the higher shares in Iowa.
- 29 of the 131 bridges in Monroe County, Iowa, are rated in poor condition (22.1%) in the 2025 National Bridge Inventory, as of .
- 38 bridges (29.0%) are rated good and 64 (48.9%) fair.
- The median Monroe County bridge was built in 1975.
- The busiest poor-rated bridge is Tralee St S. over Cedar Creek (built 1977), carrying about 520 vehicles a day.
Good 29.0% · Fair 48.9% · Poor 22.1% of 131 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 |
|---|---|---|---|
| Tralee St S. over Cedar Creek | 1977 | 520 | Poor |
| FM over BNSF RR | 1936 | 360 | Poor |
| FM over over UP RR | 1936 | 360 | Poor |
| FM over Creek | 1963 | 310 | Poor |
| FM over Local Creek | 1958 | 110 | Poor |
| Local over Drainage | 1968 | 110 | Poor |
| FM over Avery Creek | 1958 | 80 | Poor |
| FM over Avery Creek | 1970 | 80 | Poor |
| FM over Stream | 1942 | 80 | Poor |
| FM over Stream | 1940 | 70 | Poor |
| FM over Stream | 1951 | 70 | Poor |
| Local T-35 over Creek | 1950 | 60 | Poor |
| FM over Greys Creek | 1965 | 60 | Poor |
| 720TH Ave over Stream | 1965 | 45 | Poor |
| FM over Grays Creek | 1951 | 45 | Poor |
| Local over Drainage | 1997 | 45 | Poor |
| Local over Creek | 1970 | 40 | Poor |
| Local over Creek | 1959 | 40 | Poor |
| Local over Creek | 1939 | 34 | Poor |
| Local over Creek | 1959 | 30 | Poor |
| Local over Avery Creek | 1967 | 26 | Poor |
| FM over Stream | 1958 | 25 | Poor |
| Local over Drainage | 1954 | 20 | Poor |
| Local over Drainage | 1965 | 20 | Poor |
| Local over Drainage | 1941 | 20 | Poor |
| Local over Drainage | 1956 | 20 | Poor |
| Local over Drainage | 1948 | 20 | Poor |
| Local over Drainage Ditch | 1974 | 11 | Poor |
| Local over Drainage | 1996 | 11 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 5 (reloc) over over BNSF RR | 1995 | 9,400 | Fair |
| Ia 5 over Hocking Creek | 1973 | 4,780 | Good |
| Ia 137 over over UP RR | 1993 | 3,910 | Good |
| US 34 over Stream | 1962 | 3,900 | Fair |
| US 34 over Stream | 1959 | 3,900 | Fair |
| US 34 over Coal Creek | 1964 | 3,220 | Fair |
| Ia 137 over Miller Creek | 1986 | 2,400 | Fair |
| US 34 over over BNSF RR | 1964 | 2,250 | Fair |
| US 34 over Cedar Creek | 1964 | 2,250 | Fair |
| South Clinton St over BNSF RR | 2023 | 1,585 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Iowa: Iowa 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.