State Route 128 over Header Draw
FairSonoma County, California · 04-SON-128-5.26 · Structure no. 20 0037
- Built
- 1900
- 125 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 2,650
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 128 over Header Draw is a concrete continuous slab carrying State Route 128 over Header Draw in Sonoma County, California. It was built in 1900, so it is 125 years old, older than the California average of 54.8 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 2,650 vehicles a day, roughly 9% of them trucks, projected to reach 3,275 by 2046. The structure is 25 ft (7.6 m) long and 27 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 State Route 128 over Header Draw built?
It was built in 1900, making it 125 years old in 2025.
What condition is State Route 128 over Header Draw 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 November 2024.
How much traffic does State Route 128 over Header Draw carry?
About 2,650 vehicles per day (2014 count), of which roughly 9% are trucks.
How long is State Route 128 over Header Draw?
The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 27 ft wide.
Who owns State Route 128 over Header Draw?
It is owned by the State Highway Agency.