SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr
GoodCollin County, Texas · Dnt & SH 121 Toll RD · Structure no. 180430036404626
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 862 ft
- 4 main spans
- Daily traffic
- 800
- 2010 count
- Owner
- Toll Authority
- Local Toll Authority
About this bridge
SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr is a steel continuous stringer/multi-beam or girder carrying SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr 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 800 vehicles a day, roughly 2% of them trucks, projected to reach 900 by 2030. The structure is 862 ft (262.7 m) long and 30 ft wide.
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr built?
It was built in 2011, making it 14 years old in 2025.
What condition is SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr 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 November 2023.
How much traffic does SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr carry?
About 800 vehicles per day (2010 count), of which roughly 2% are trucks.
How long is SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr?
The structure is 862 ft (262.7 m) long with a longest span of 259 ft (78.9 m) and a deck 30 ft wide.
Who owns SH 121 S to Dnt N over SH 121 Sbfr & Dnt Nbfr?
It is owned by the Local Toll Authority.