Bridge conditions in Blaine County, Oklahoma
272 inventoried bridges · 19 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 272 bridges in Blaine County: 184 rated good, 69 fair, and 19 poor.
- 19 of the 272 bridges in Blaine County, Oklahoma, are rated in poor condition (7.0%) in the 2025 National Bridge Inventory, as of .
- 184 bridges (67.6%) are rated good and 69 (25.4%) fair.
- The median Blaine County bridge was built in 1982.
- The busiest poor-rated bridge is State Highway 58A over Canton Lake Spillway (built 1948), carrying about 730 vehicles a day.
Good 67.6% · Fair 25.4% · Poor 7.0% of 272 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 |
|---|---|---|---|
| State Highway 58A over Canton Lake Spillway | 1948 | 730 | Poor |
| E0660 over N. Canadian River | 1915 | 100 | Poor |
| 0636C over Creek | 1937 | 100 | Poor |
| E0700 over Creek | 1950 | 100 | Poor |
| E0710 over Bitter Creek | 1982 | 100 | Poor |
| E0780 over North Canadian River | 1950 | 100 | Poor |
| E0660 over Creek | 1960 | 100 | Poor |
| E0600 over Creek | 1930 | 50 | Poor |
| Fas 0618 over Creek | 1949 | 50 | Poor |
| E0640 over Spring Creek | 1950 | 50 | Poor |
| E0650 over Spring Creek | 1960 | 50 | Poor |
| E0840 over Chicken Creek | 1985 | 50 | Poor |
| E0790 over Creek | 1950 | 40 | Poor |
| N2560 over Chicken Creek | 1992 | 30 | Poor |
| N2490 over Ninemile Creek | 1960 | 30 | Poor |
| N2690 over Creek | 1982 | 30 | Poor |
| N2660 over Otter Creek | 1988 | 30 | Poor |
| N2690 over Creek | 1912 | 25 | Poor |
| N2690 over Otter Creek | 1984 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 270 over Creek | 1937 | 5,100 | Good |
| U.S. 270 over Creek | 1984 | 5,100 | Good |
| U.S. 270 over Creek | 1930 | 5,000 | Good |
| U.S. 270 over N. Canadian River | 1971 | 5,000 | Fair |
| U.S. 270 over N. Canadian River Oflow | 1971 | 5,000 | Good |
| S.H. 3 over Creek | 1984 | 5,000 | Good |
| S.H. 3 over Creek | 1984 | 5,000 | Good |
| U.S. 270 over Creek | 1998 | 5,000 | Good |
| U.S. 270 over Creek | 1937 | 4,800 | Good |
| S.H. 8 over Creek | 1951 | 3,500 | 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.