U.S. 277 over Slwc R.R. Under
Caddo County, Oklahoma · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- U.S. 277 over Slwc R.R. Under in Caddo County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1995, making it 30 years old at the 2025 inventory.
- It carries about 1,900 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 269 of the 423 inventoried bridges in Caddo County rated fair (63.6%); 50 (11.8%) 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 September 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 → (34.91599, -98.17583)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 199 ft |
| Location | .7N & .8E Jct US277/SH19 |
| NBI structure number | 242320000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Caddo County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-40 over Creek | 1960 | 20,400 | Good |
| I-40 over Creek | 1959 | 20,300 | Good |
| I-40 over Creek | 1959 | 19,700 | Good |
| I-40 over Deer Creek Trib. | 1964 | 19,600 | Good |
| I-40 over Creek | 1960 | 19,000 | Good |
| I-40 over White Canyon Creek Trib. | 1960 | 19,000 | Fair |
All bridges nearby: Caddo County, OK bridge conditions · every bridge in Caddo County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.