Bridge conditions in Seminole County, Oklahoma
298 inventoried bridges · 36 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Seminole County has 36 bridges rated poor out of 298 inventoried, a 12.1% share that puts it well above the national rate of about 7%.
- 36 of the 298 bridges in Seminole County, Oklahoma, are rated in poor condition (12.1%) in the 2025 National Bridge Inventory, as of .
- 108 bridges (36.2%) are rated good and 154 (51.7%) fair.
- The median Seminole County bridge was built in 1963.
- The busiest poor-rated bridge is U.S. 270 over Creek (built 1943), carrying about 7,400 vehicles a day.
Good 36.2% · Fair 51.7% · Poor 12.1% of 298 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 |
|---|---|---|---|
| U.S. 270 over Creek | 1943 | 7,400 | Poor |
| U.S. 270 over Carter Creek | 1953 | 7,400 | Poor |
| U.S. 270 over Creek | 1957 | 6,100 | Poor |
| S.H. 9 over Creek | 1936 | 1,200 | Poor |
| N3560 over Creek | 1929 | 1,000 | Poor |
| 6718C over Tributary to Wewoka Ck | 1942 | 675 | Poor |
| 6722C over Creek | 1950 | 350 | Poor |
| 6702C over Creek | 1950 | 290 | Poor |
| E1425 over Creek | 1940 | 250 | Poor |
| E1229 over Creek | 1950 | 200 | Poor |
| E1160 over Creek | 1927 | 150 | Poor |
| 6732C over Sand Creek | 1991 | 100 | Poor |
| N3560 over Salt Creek | 1927 | 100 | Poor |
| E3632 over Wewoka CR & UP R.R Under | 1927 | 100 | Poor |
| N3580 over Creek | 1928 | 100 | Poor |
| N3560 over Little River | 1929 | 100 | Poor |
| N3540 over Sandy Creek | 1932 | 100 | Poor |
| N3670 over Creek | 1938 | 100 | Poor |
| N3630 over Creek | 1939 | 100 | Poor |
| E1390 over Creek | 1939 | 100 | Poor |
| N3590 over Creek | 1939 | 100 | Poor |
| N3670 over Creek | 1939 | 100 | Poor |
| E1140 over Creek | 1940 | 100 | Poor |
| N3570 over Creek | 1940 | 100 | Poor |
| N3530 over Creek | 1940 | 100 | Poor |
| E1350 over Creek | 1975 | 100 | Poor |
| E1270 over Tributary to Wewoka Ck | 1975 | 100 | Poor |
| E1380 over Creek | 1939 | 75 | Poor |
| E1390 over Creek | 1940 | 75 | Poor |
| E1280 over Creek | 1940 | 75 | Poor |
| N3550 over Creek | 1941 | 75 | Poor |
| N3510 over Turkey Creek | 1928 | 60 | Poor |
| E1370 over Creek | 1928 | 50 | Poor |
| N3540 over Creek | 1939 | 50 | Poor |
| D3545 over Creek | 1942 | 50 | Poor |
| E1420 over Creek | 1940 | 30 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-40 over Creek | 1963 | 15,100 | Fair |
| I-40 over Creek | 1963 | 15,100 | Fair |
| I-40 over Creek | 1964 | 14,800 | Good |
| S.H. 99 over Magnolia Creek | 1965 | 14,400 | Good |
| Old U.S. 270 over Magnolia Creek | 2020 | 10,400 | Good |
| S.H. 9 over Carter Creek | 2011 | 10,000 | Fair |
| S.H. 9 over Magnolia Creek | 1965 | 9,800 | Fair |
| I-40 over Co. Rd. Under | 1963 | 8,900 | Good |
| I-40 over Co. Rd. Under | 1963 | 8,900 | Fair |
| I-40 over Creek | 1963 | 8,900 | 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.