Spillway Bridge over Spillway Channel
Fair Condition60 years old50 vehicles/day
Location
| State | Washington |
| County | Walla Walla |
| Location | Lower Monumental Dam |
| Carries | Spillway Bridge |
| Crosses | Spillway Channel |
| Coordinates | 46.56228, -118.53783 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Box Beam - Single/Spread |
| Total Length | 511.8 ft (156 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 23.0 ft (7 m) |
| Deck Area | 1,092 sq m |
| Main Spans | 8 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 50 (2022) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | Corps of Engineers |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | CEPNPWWA0LMASPY |