SH121 Sbl over Trinity River
Tarrant County, Texas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH121 Sbl over Trinity River in Tarrant County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1964, making it 61 years old at the 2025 inventory.
- It carries about 43,156 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 1,119 of the 2,618 inventoried bridges in Tarrant County rated fair (42.7%); 9 (0.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 7 to 6, superstructure 7 to 6.
- Its most recent inspection on record is dated May 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (32.76723, -97.31228)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 698 ft |
| Location | SH121 over Trinity River |
| NBI structure number | 022200036303012 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Tarrant County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 114 over Trib of Cottonwood Br | 2012 | 244,281 | Good |
| SH114ML Gp Wbfr over Trib of Big Bear Creek | 2013 | 205,390 | Good |
| International Pkwy over Grapevine Creek | 2013 | 191,155 | Good |
| Ih 35W (nbl) over SH 121 EB | 1960 | 189,252 | Good |
| International Pkwy over Trib of Trigg Lake | 1973 | 188,877 | Fair |
| Ih 35W over Trib Big Fossil Creek | 1967 | 185,654 | Good |
All bridges nearby: Tarrant County, TX bridge conditions · every bridge in Tarrant County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.