SH 121 over Sister Grove Ck Trib #4
GoodCollin County, Texas · 4.55 MI NE of FM 545 · Structure no. 180430054903233
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected September 2023
- Type
- Culvert
- Concrete
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 15,069
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 121 over Sister Grove Ck Trib #4 is a concrete culvert carrying SH 121 over Sister Grove Ck Trib #4 in Collin County, Texas. It was built in 2021, so it is 4 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 15,069 vehicles a day, roughly 11% of them trucks, projected to reach 20,905 by 2040. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 over Sister Grove Ck Trib #4 built?
It was built in 2021, making it 4 years old in 2025.
What condition is SH 121 over Sister Grove Ck Trib #4 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 September 2023.
How much traffic does SH 121 over Sister Grove Ck Trib #4 carry?
About 15,069 vehicles per day (2020 count), of which roughly 11% are trucks.
How long is SH 121 over Sister Grove Ck Trib #4?
The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).
Who owns SH 121 over Sister Grove Ck Trib #4?
It is owned by the State Highway Agency.