Bridge conditions in Platte County, Missouri
287 inventoried bridges · 19 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 287 bridges in Platte County: 105 rated good, 163 fair, and 19 poor.
- 19 of the 287 bridges in Platte County, Missouri, are rated in poor condition (6.6%) in the 2025 National Bridge Inventory, as of .
- 105 bridges (36.6%) are rated good and 163 (56.8%) fair.
- The median Platte County bridge was built in 1985.
- The busiest poor-rated bridge is Is 29 S over Owl CR (built 1958), carrying about 38,357 vehicles a day.
Good 36.6% · Fair 56.8% · Poor 6.6% of 287 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 |
|---|---|---|---|
| Is 29 S over Owl CR | 1958 | 38,357 | Poor |
| Is 29 N over Platte Rvr | 1959 | 26,656 | Poor |
| Is 435 S over First CR | 1977 | 24,918 | Poor |
| Is 29 S over Platte Rvr Ovrfl | 1950 | 18,026 | Poor |
| Mo 9 S over Burlington CR | 1968 | 13,459 | Poor |
| Mo 92 E over Missouri Rvr RR UP RR | 1955 | 10,684 | Poor |
| Mo 92 E over Platte Rvr | 1995 | 6,862 | Poor |
| Mo 9 N over US 69 | 1969 | 6,545 | Poor |
| Cookingham Dr over Second CR | 1950 | 1,940 | Poor |
| Rt B S over Grove CR | 1962 | 1,600 | Poor |
| S Crooked Rd over Rush CR | 1967 | 1,493 | Poor |
| NE 108TH St over Second CR | 1930 | 1,218 | Poor |
| NW Cookingham Dr E over Is 435 | 1977 | 1,074 | Poor |
| Rt Z E over Platte Rvr | 1966 | 958 | Poor |
| Graden Rd over Pied CR | 1968 | 800 | Poor |
| Woodruff Rd over Bee Br | 1918 | 240 | Poor |
| Settles Station Rd over Jowler CR | 1930 | 120 | Poor |
| Stanton Rd over Sugar CR | 1920 | 60 | Poor |
| Old N Hwy over Brush CR | 1949 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 29 N over Cst NW 56TH St | 2021 | 134,485 | Good |
| Is 29 S over Line CR | 1957 | 113,704 | Fair |
| Is 29 S over Cst NW 56TH St | 2021 | 69,887 | Good |
| Is 29 N over Mo 45 | 1967 | 64,598 | Fair |
| Is 29 N over Cst NW 72ND St | 2023 | 57,958 | Good |
| Is 29 N over Rt Aa | 2021 | 57,469 | Good |
| Is 635 S over Missouri Rvr UP RR | 1976 | 56,619 | Fair |
| Is 29 S over Rt Aa | 2021 | 56,235 | Good |
| Is 29 S over Mo 45 | 1967 | 52,596 | Fair |
| Is 435 S over Naylor Br | 1983 | 48,484 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Missouri: Missouri 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.