SR 109 over Humptulips River
Fair Condition70 years old6,510 vehicles/day
Location
| State | Washington |
| County | Grays Harbor |
| Location | 10.3 N Jct US 101 |
| Carries | SR 109 |
| Crosses | Humptulips River |
| Coordinates | 47.05079, -124.04250 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 363.8 ft (110.9 m) |
| Max Span | 233.9 ft (71.3 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 1086.8 sq m |
| Main Spans | 1 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 6,510 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0004874B0000000 |