SH 121 SB FR over White Rock Creek
GoodCollin County, Texas · 1.4 MI NE of SH 289 · Structure no. 180430036404170
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 550 ft
- 5 main spans
- Daily traffic
- 20,544
- 2020 count
- Owner
- Toll Authority
- Local Toll Authority
About this bridge
SH 121 SB FR over White Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 121 SB FR over White Rock Creek in Collin County, Texas. It was built in 2008, so it is 17 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 20,544 vehicles a day, roughly 3% of them trucks, projected to reach 29,320 by 2040. The structure is 550 ft (167.6 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 SH 121 SB FR over White Rock Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is SH 121 SB FR over White Rock 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 December 2023.
How much traffic does SH 121 SB FR over White Rock Creek carry?
About 20,544 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is SH 121 SB FR over White Rock Creek?
The structure is 550 ft (167.6 m) long with a longest span of 125 ft (38.1 m) and a deck 51 ft wide.
Who owns SH 121 SB FR over White Rock Creek?
It is owned by the Local Toll Authority.