Bridge conditions in Grimes County, Texas
248 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 248 bridges in Grimes County: 111 rated good, 135 fair, and 2 poor.
- 2 of the 248 bridges in Grimes County, Texas, are rated in poor condition (0.8%) in the 2025 National Bridge Inventory, as of .
- 111 bridges (44.8%) are rated good and 135 (54.4%) fair.
- The median Grimes County bridge was built in 1990.
- The busiest poor-rated bridge is SH 30 over Gibbons Creek (built 1951), carrying about 6,351 vehicles a day.
Good 44.8% · Fair 54.4% · Poor 0.8% of 248 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 |
|---|---|---|---|
| SH 30 over Gibbons Creek | 1951 | 6,351 | Poor |
| CR 179 over Sulphur Creek Branch | 1940 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 6 over Drain | 1970 | 27,241 | Good |
| SH 6 over Drain | 1970 | 27,241 | Good |
| SH 6 over Sylvia Creek | 1970 | 25,973 | Fair |
| SH 6 over Cedar Creek | 1970 | 25,973 | Good |
| SH 6 over Sandy Creek | 1970 | 22,090 | Good |
| SH 6 SB over SH 90 | 1971 | 15,528 | Good |
| SH 6 NB over SH 90 | 1971 | 15,528 | Good |
| SH 105 over Grassy Creek | 1978 | 15,414 | Fair |
| SH 6 SB over Bs 6 NB | 1971 | 14,962 | Good |
| SH 6 NB over Grassy Creek | 1964 | 13,326 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Texas: Texas 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.