Chisolm Trail Road over Onion Branch
GoodWilliamson County, Texas · 0.8 MI S of FM 3406 · Structure no. 142460E00225002
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected September 2023
- Type
- Culvert
- Concrete
- Length
- 128 ft
- 12 main spans
- Daily traffic
- 6,257
- 2009 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Chisolm Trail Road over Onion Branch is a concrete culvert carrying Chisolm Trail Road over Onion Branch in Williamson County, Texas. It was built in 2012, so it is 13 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 6,257 vehicles a day, roughly 2% of them trucks, projected to reach 9,298 by 2029. The structure is 128 ft (39 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Chisolm Trail Road over Onion Branch built?
It was built in 2012, making it 13 years old in 2025.
What condition is Chisolm Trail Road over Onion Branch 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 September 2023.
How much traffic does Chisolm Trail Road over Onion Branch carry?
About 6,257 vehicles per day (2009 count), of which roughly 2% are trucks.
How long is Chisolm Trail Road over Onion Branch?
The structure is 128 ft (39 m) long with a longest span of 10 ft (3 m) and a deck 76 ft wide.
Who owns Chisolm Trail Road over Onion Branch?
It is owned by the City or Municipal Highway Agency.