SR 503 over Lewis River
PoorPosted for loadClark County, Washington · 19.7 N JCT SR 502 · Structure no. 000000IU0000000
- Built
- 1932
- 93 years old, rebuilt 1957
- Condition
- Poor
- inspected March 2023
- Type
- Suspension
- Steel
- Length
- 458 ft
- 1 main span
- Daily traffic
- 1,239
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 503 over Lewis River is a steel suspension carrying SR 503 over Lewis River in Clark County, Washington. It was built in 1932 and reconstructed in 1957, so it is 93 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 3 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. Its operating status is: posted for load restriction.
It carries about 1,239 vehicles a day, roughly 10% of them trucks, projected to reach 1,568 by 2039. The structure is 458 ft (139.6 m) long and 20 ft wide. If it were closed, the detour would be 67.7 mi (109 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 503 over Lewis River built?
It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1957.
What condition is SR 503 over Lewis River 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 March 2023.
How much traffic does SR 503 over Lewis River carry?
About 1,239 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is SR 503 over Lewis River?
The structure is 458 ft (139.6 m) long with a longest span of 300 ft (91.4 m) and a deck 20 ft wide.
Who owns SR 503 over Lewis River?
It is owned by the State Highway Agency.