Spur 408 SB over Grady Niblo RD
GoodDallas County, Texas · 1.4 MI N of IH 20 · Structure no. 180570300001004
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 262 ft
- 4 main spans
- Daily traffic
- 50,243
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Spur 408 SB over Grady Niblo RD is a prestressed concrete stringer/multi-beam or girder carrying Spur 408 SB over Grady Niblo RD in Dallas County, Texas. It was built in 1975, so it is 50 years old, older 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 50,243 vehicles a day, roughly 9% of them trucks, projected to reach 134,382 by 2040. The structure is 262 ft (79.9 m) long and 62 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Spur 408 SB over Grady Niblo RD built?
It was built in 1975, making it 50 years old in 2025.
What condition is Spur 408 SB over Grady Niblo RD 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 October 2023.
How much traffic does Spur 408 SB over Grady Niblo RD carry?
About 50,243 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is Spur 408 SB over Grady Niblo RD?
The structure is 262 ft (79.9 m) long with a longest span of 70 ft (21.3 m) and a deck 62 ft wide.
Who owns Spur 408 SB over Grady Niblo RD?
It is owned by the State Highway Agency.