Bridge conditions in McClain County, Oklahoma
242 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
McClain County tracks close to typical: 11 of its 242 inventoried bridges (4.5%) are rated poor, against a national rate of about 7%.
- 11 of the 242 bridges in McClain County, Oklahoma, are rated in poor condition (4.5%) in the 2025 National Bridge Inventory, as of .
- 99 bridges (40.9%) are rated good and 132 (54.5%) fair.
- The median McClain County bridge was built in 1988.
- The busiest poor-rated bridge is I-35 over S.H. 39 Under (built 1968), carrying about 14,950 vehicles a day.
Good 40.9% · Fair 54.5% · Poor 4.5% of 242 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-35 over S.H. 39 Under | 1968 | 14,950 | Poor |
| S.H. 74 over I-35 Under | 1959 | 5,400 | Poor |
| N3095 over Walnut Creek | 1927 | 2,400 | Poor |
| S.H. 24 over Finn Creek | 1969 | 300 | Poor |
| E1240 over Stinson Creek | 1985 | 100 | Poor |
| N3035 over Buffalo Creek | 1985 | 100 | Poor |
| N2990 over Creek | 1985 | 100 | Poor |
| N2990 over Walnut Creek | 1987 | 100 | Poor |
| E1470 over Creek | 1988 | 100 | Poor |
| E1370 over Red Blanket Creek | 1991 | 100 | Poor |
| E1460 over Turkey Creek | 1998 | 100 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-44 over S. Canadian River | 2000 | 45,900 | Fair |
| I-35 over Creek | 1959 | 45,100 | Fair |
| I-35 over Creek | 1959 | 36,300 | Fair |
| I-35 over Creek | 1959 | 36,300 | Fair |
| I-35 NB over S.H. 74 SB Ramp Under | 1967 | 35,900 | Fair |
| I-35 over Creek | 1959 | 35,100 | Good |
| I-35 over Creek | 1967 | 32,300 | Good |
| I-35 over Creek | 1968 | 32,200 | Good |
| I-35 over Creek | 1968 | 32,200 | Good |
| I-35 over Beaver Creek | 1968 | 30,200 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Oklahoma: Oklahoma bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.