Is 55 S over Ramsey CR
Scott County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Is 55 S over Ramsey CR in Scott County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1954 and reconstructed in 1988, making it 71 years old at the 2025 inventory.
- It carries about 18,355 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 98 of the 184 inventoried bridges in Scott County rated fair (53.3%); 15 (8.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (37.21889, -89.54891)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 306 ft |
| Location | S 185 T 30 N R 13 E |
| NBI structure number | 4774 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Scott 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 Dtch No 2 | 1950 | 18,355 | Fair |
| Is 55 S over Rt M UP RR | 1962 | 18,355 | Fair |
All bridges nearby: Scott County, MO bridge conditions · every bridge in Scott County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.