SH 121 SB FR over US 75
GoodCollin County, Texas · At Int US 75 & SH 121 · Structure no. 180430036404614
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 636 ft
- 4 main spans
- Daily traffic
- 2,500
- 2012 count
- Owner
- Toll Authority
- Local Toll Authority
About this bridge
SH 121 SB FR over US 75 is a prestressed concrete stringer/multi-beam or girder carrying SH 121 SB FR over US 75 in Collin County, Texas. It was built in 2011, so it is 14 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 2,500 vehicles a day, roughly 5% of them trucks, projected to reach 13,961 by 2030. The structure is 636 ft (193.9 m) long and 42 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 SB FR over US 75 built?
It was built in 2011, making it 14 years old in 2025.
What condition is SH 121 SB FR over US 75 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 US 75 carry?
About 2,500 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is SH 121 SB FR over US 75?
The structure is 636 ft (193.9 m) long with a longest span of 133 ft (40.5 m) and a deck 42 ft wide.
Who owns SH 121 SB FR over US 75?
It is owned by the Local Toll Authority.