U.S. 77 Ramp over U.S. 77 NB Ramp Under
Oklahoma County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- U.S. 77 Ramp over U.S. 77 NB Ramp Under in Oklahoma County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2021, making it 4 years old at the 2025 inventory.
- It carries about 6,550 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 438 of the 1,214 inventoried bridges in Oklahoma County rated good (36.1%); 80 (6.6%) 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 June 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (35.53, -97.50417)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 288 ft |
| Location | .5E of I235 |
| NBI structure number | 296200000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| 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 Oklahoma County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-44 over Creek | 1973 | 140,700 | Fair |
| I-44 EB over I-44 Ramp N-e Under | 1975 | 140,700 | Fair |
| I-35 over Creek | 1959 | 136,800 | Good |
| I-44 over Creek | 1974 | 128,300 | Good |
| I-44 WB over S.H. 152 Ramp Under | 1974 | 128,300 | Fair |
| I-44 WB over I-44 Ramp S-w Under | 1975 | 125,600 | Fair |
All bridges nearby: Oklahoma County, OK bridge conditions · every bridge in Oklahoma County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.