US 183 NB over Onion Creek
FairTravis County, Texas · 1.00 MI N of FM 812 · Structure no. 142270015201034
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 580 ft
- 4 main spans
- Daily traffic
- 18,136
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 183 NB over Onion Creek is a prestressed concrete stringer/multi-beam or girder carrying US 183 NB over Onion Creek in Travis County, Texas. It was built in 1970, so it is 55 years old, older than the Texas average of 44.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 18,136 vehicles a day, roughly 8% of them trucks, projected to reach 18,960 by 2033. The structure is 580 ft (176.8 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
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 183 NB over Onion Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is US 183 NB over Onion Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.
How much traffic does US 183 NB over Onion Creek carry?
About 18,136 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 183 NB over Onion Creek?
The structure is 580 ft (176.8 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.
Who owns US 183 NB over Onion Creek?
It is owned by the State Highway Agency.