SH 121 SB Off-Ramp over SH 121 SB On-Ramp
GoodDallas County, Texas · 1.6 MI NE of IH 635 · Structure no. 180570036402619
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 990 ft
- 6 main spans
- Daily traffic
- 3,600
- 2005 count
- Owner
- State
- State Highway Agency
About this bridge
SH 121 SB Off-Ramp over SH 121 SB On-Ramp is a prestressed concrete stringer/multi-beam or girder carrying SH 121 SB Off-Ramp over SH 121 SB On-Ramp in Dallas County, Texas. It was built in 2017, so it is 8 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 3,600 vehicles a day, roughly 1% of them trucks, projected to reach 7,300 by 2025. The structure is 990 ft (301.8 m) long and 28 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 | 8 Very Good | No problems noted. |
| 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 SB Off-Ramp over SH 121 SB On-Ramp built?
It was built in 2017, making it 8 years old in 2025.
What condition is SH 121 SB Off-Ramp over SH 121 SB On-Ramp 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 April 2023.
How much traffic does SH 121 SB Off-Ramp over SH 121 SB On-Ramp carry?
About 3,600 vehicles per day (2005 count), of which roughly 1% are trucks.
How long is SH 121 SB Off-Ramp over SH 121 SB On-Ramp?
The structure is 990 ft (301.8 m) long with a longest span of 120 ft (36.6 m) and a deck 28 ft wide.
Who owns SH 121 SB Off-Ramp over SH 121 SB On-Ramp?
It is owned by the State Highway Agency.