Allenton Rd over UP RR
St. Louis County, Missouri · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Allenton Rd over UP RR in St. Louis County, Missouri, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1928, making it 97 years old at the 2025 inventory.
- It carries about 1,000 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (38.50406, -90.67636)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 3 | Serious condition |
| Superstructure | 2 | Critical condition |
| Substructure | 3 | Serious condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 108 ft |
| Location | S 34 T 44 N R 3 E |
| NBI structure number | 16891 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
All bridges nearby: St. Louis County, MO bridge conditions · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.