S.H. 37 over Coal Creek
Grady County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 37 over Coal Creek in Grady County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1997, making it 28 years old at the 2025 inventory.
- It carries about 12,100 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 114 of the 447 inventoried bridges in Grady County rated good (25.5%); 31 (6.9%) 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 July 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 → (35.29119, -97.71139)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 40 ft |
| Location | 5.9 Mi E SH92 |
| NBI structure number | 249280000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Grady County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Bailey A Tp (I-44) over Creek | 1963 | 19,300 | Good |
| Bailey A Tp (I-44) over Creek | 1963 | 19,300 | Good |
| Bailey A Tp (I-44) over U.S. 62 Under | 1963 | 19,300 | Fair |
| Bailey A Tp (I-44) over U.S. 81 Under | 1963 | 19,300 | Fair |
| Bailey A Tp (I-44) over Co. Rd. E1370 Under | 1964 | 19,300 | Good |
| Bailey A Tp (I-44) over Bitter Creek Oflow | 1964 | 19,300 | Good |
All bridges nearby: Grady County, OK bridge conditions · every bridge in Grady County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.