SR 503 over Rock CR
Fair Condition30 years old1,700 vehicles/day
Location
| State | Washington |
| County | Cowlitz |
| Location | 5.4 N Jct SR 503 Spur |
| Carries | SR 503 |
| Crosses | Rock CR |
| Coordinates | 45.99475, -122.45899 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 418.0 ft (127.4 m) |
| Max Span | 158.1 ft (48.2 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 1363.2 sq m |
| Main Spans | 3 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 1,700 (2023) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 0014654A0000000 |