S.H. 37 over I-35 Under
Cleveland County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 37 over I-35 Under in Cleveland County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1967 and reconstructed in 2019, making it 58 years old at the 2025 inventory.
- It carries about 19,000 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 141 of the 315 inventoried bridges in Cleveland County rated good (44.8%); 14 (4.4%) 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 October 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 → (35.33374, -97.49054)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 287 ft |
| Location | 9.4 Mi N Mcclain C/l |
| NBI structure number | 170210000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 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 Cleveland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over 27TH St. Under | 2002 | 126,600 | Fair |
| I-35 over 89TH St. Under | 2002 | 119,200 | Good |
| I-35 over Creek | 1966 | 113,500 | Fair |
| I-35 over Main St. Under | 1966 | 113,500 | Fair |
| I-35 over 5TH St. Under | 1967 | 113,500 | Good |
| I-35 over Creek | 1951 | 109,400 | Fair |
All bridges nearby: Cleveland County, OK bridge conditions · every bridge in Cleveland County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.