SR 302 over Henderson Bay
PoorPierce County, Washington · 10.7 E Mason CO · Structure no. 000000JQ0000000
- Built
- 1936
- 89 years old, rebuilt 1966
- Condition
- Poor
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 550 ft
- 5 main spans
- Daily traffic
- 23,753
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 302 over Henderson Bay is a concrete continuous box beam or girders - multiple carrying SR 302 over Henderson Bay in Pierce County, Washington. It was built in 1936 and reconstructed in 1966, so it is 89 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 23,753 vehicles a day, roughly 4% of them trucks, projected to reach 32,329 by 2039. The structure is 550 ft (167.6 m) long and 22 ft wide. If it were closed, the detour would be 37.9 mi (61 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 302 over Henderson Bay built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1966.
What condition is SR 302 over Henderson Bay in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does SR 302 over Henderson Bay carry?
About 23,753 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is SR 302 over Henderson Bay?
The structure is 550 ft (167.6 m) long with a longest span of 184 ft (56.1 m) and a deck 22 ft wide.
Who owns SR 302 over Henderson Bay?
It is owned by the State Highway Agency.