SH121 Sbl over Trinity River
FairTarrant County, Texas · SH121 over Trinity River · Structure no. 022200036303012
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 698 ft
- 5 main spans
- Daily traffic
- 43,156
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH121 Sbl over Trinity River is a steel continuous stringer/multi-beam or girder carrying SH121 Sbl over Trinity River in Tarrant County, Texas. It was built in 1964, so it is 61 years old, older than the Texas average of 44.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 43,156 vehicles a day, roughly 8% of them trucks, projected to reach 86,311 by 2040. The structure is 698 ft (212.8 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH121 Sbl over Trinity River built?
It was built in 1964, making it 61 years old in 2025.
What condition is SH121 Sbl over Trinity River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does SH121 Sbl over Trinity River carry?
About 43,156 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is SH121 Sbl over Trinity River?
The structure is 698 ft (212.8 m) long with a longest span of 71 ft (21.6 m) and a deck 71 ft wide.
Who owns SH121 Sbl over Trinity River?
It is owned by the State Highway Agency.