Nasa RD 1 over FM 270 & Cow Bayou
GoodHarris County, Texas · 1.3 MI NE of SH 3 · Structure no. 121020098101028
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 978 ft
- 9 main spans
- Daily traffic
- 41,441
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nasa RD 1 over FM 270 & Cow Bayou is a prestressed concrete stringer/multi-beam or girder carrying Nasa RD 1 over FM 270 & Cow Bayou in Harris 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 41,441 vehicles a day, roughly 8% of them trucks, projected to reach 58,017 by 2042. The structure is 978 ft (298.1 m) long and 108 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nasa RD 1 over FM 270 & Cow Bayou built?
It was built in 2008, making it 17 years old in 2025.
What condition is Nasa RD 1 over FM 270 & Cow Bayou 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 2024.
How much traffic does Nasa RD 1 over FM 270 & Cow Bayou carry?
About 41,441 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Nasa RD 1 over FM 270 & Cow Bayou?
The structure is 978 ft (298.1 m) long with a longest span of 114 ft (34.7 m) and a deck 108 ft wide.
Who owns Nasa RD 1 over FM 270 & Cow Bayou?
It is owned by the State Highway Agency.