SH 21 EB over Thompson Creek
Brazos County, Texas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 21 EB over Thompson Creek in Brazos County, Texas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1957, making it 68 years old at the 2025 inventory.
- It carries about 4,981 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 239 of the 374 inventoried bridges in Brazos County rated good (63.9%); 0 (0.0%) are rated poor.
- 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 → (30.6535, -96.4514)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 151 ft |
| Location | 3.0 Mi SW of FM 2818 |
| NBI structure number | 170210011604031 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Brazos County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 6 Mls & Frs over Bee Creek | 1971 | 58,504 | Fair |
| SH 6 Mls & Frs over Draw | 1971 | 57,636 | Fair |
| SH 6 Mls over Sewer Creek | 1971 | 56,179 | Fair |
| SH 6 Mls & Frs over Draw | 1971 | 56,048 | Fair |
| Bs 6 over Wolfpen Creek | 1960 | 53,292 | Fair |
| Bs 6 over Bee Creek | 1932 | 48,130 | Fair |
All bridges nearby: Brazos County, TX bridge conditions · every bridge in Brazos County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.