Bridge conditions in Scott County, Missouri
184 inventoried bridges · 15 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
15 of the 184 bridges the federal inventory lists in Scott County are rated poor; the rest split 71 good and 98 fair.
- 15 of the 184 bridges in Scott County, Missouri, are rated in poor condition (8.2%) in the 2025 National Bridge Inventory, as of .
- 71 bridges (38.6%) are rated good and 98 (53.3%) fair.
- The median Scott County bridge was built in 1975.
- The busiest poor-rated bridge is Mo 77 S over Drain Dtch No 1 (built 1930), carrying about 4,733 vehicles a day.
Good 38.6% · Fair 53.3% · Poor 8.2% of 184 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 |
|---|---|---|---|
| Mo 77 S over Drain Dtch No 1 | 1930 | 4,733 | Poor |
| Mo 77 S over Is 55 | 1962 | 4,440 | Poor |
| Rt Y E over Drain Dtch 2 Dist | 1948 | 1,703 | Poor |
| Rt Aa S over US 60 | 1962 | 1,664 | Poor |
| Mo 91 S over Drain Dtch 1 Dist | 1933 | 743 | Poor |
| Mo 91 S over Drain Dtch 4 Dist | 1933 | 743 | Poor |
| Rt Z S over Drain Dtch 1 Dist | 1935 | 626 | Poor |
| Rt Zz E over Drain Dtch 1 Dist | 1948 | 605 | Poor |
| Rt C E over St Johns Drain Dtc | 1959 | 529 | Poor |
| Rt O S over North Cut Dtch | 1957 | 407 | Poor |
| Second St over Heeb CR | 1974 | 300 | Poor |
| Compress Rd over Dtch No 4 | 1978 | 300 | Poor |
| County Rd 311 over Ramsey Br | 2000 | 120 | Poor |
| County Rd 530 over North Cut Dtch | 1996 | 75 | Poor |
| County Rd 468 over Dtch No 1 | 1962 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 55 S over SW Ramsey CR | 1962 | 26,540 | Fair |
| Is 55 S over Illmo Br | 1962 | 26,540 | Fair |
| Is 55 S over Town Dtch | 1962 | 24,249 | Fair |
| Is 55 S over Lateral Dtch No 4 | 1962 | 24,249 | Fair |
| Is 55 S over Ramsey CR | 1954 | 18,355 | Fair |
| Is 55 S over Dtch No 2 | 1950 | 18,355 | Fair |
| Is 55 S over Rt M UP RR | 1962 | 18,355 | Fair |
| Is 55 N over Drain Dtch # 1 | 1961 | 14,979 | Fair |
| Is 55 N over Ramsey CR | 1953 | 14,979 | Fair |
| Is 55 S over Ramsey CR | 2017 | 14,190 | Good |
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.