SH 121 Sbfr over Sister Grove Creek
GoodCollin County, Texas · 5.85 MI NE of FM 545 · Structure no. 180430054903238
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 430 ft
- 5 main spans
- Daily traffic
- 600
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
SH 121 Sbfr over Sister Grove Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 121 Sbfr over Sister Grove Creek in Collin County, Texas. It was built in 2020, so it is 5 years old, younger than the Texas average of 44.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 600 vehicles a day, roughly 2% of them trucks, projected to reach 1 by 1900. The structure is 430 ft (131.1 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 Sbfr over Sister Grove Creek built?
It was built in 2020, making it 5 years old in 2025.
What condition is SH 121 Sbfr over Sister Grove Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.
How much traffic does SH 121 Sbfr over Sister Grove Creek carry?
About 600 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is SH 121 Sbfr over Sister Grove Creek?
The structure is 430 ft (131.1 m) long with a longest span of 105 ft (32 m) and a deck 38 ft wide.
Who owns SH 121 Sbfr over Sister Grove Creek?
It is owned by the State Highway Agency.