E Ingram Island Rd over Ingram Slough
Benton County, Oregon · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- E Ingram Island Rd over Ingram Slough in Benton County, Oregon, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1963, making it 62 years old at the 2025 inventory.
- It carries about 469 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 20 of the 190 inventoried bridges in Benton County rated poor (10.5%); 20 (10.5%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (deck 6 to 5, substructure 6 to 4).
- Its most recent inspection on record is dated July 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (44.31333, -123.23152)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 4 | Poor condition |
Bridge details
| Structure | Steel through truss |
| Length | about 173 ft |
| Location | 0094 Mi E of Old River Rd |
| NBI structure number | 14183 000 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Benton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| OR 99W (Hwy 91) SB over Marys River | 1949 | 23,359 | Fair |
| US 20 (Hwy 33) over Wprr | 1960 | 22,606 | Fair |
| OR 34 (Hwy 33) over Willamette River | 1991 | 22,606 | Good |
| Or 34 (hwy 33) over 3rd & 4th Streets | 1992 | 22,606 | Good |
| US 20 (Hwy 33) over Oak Creek | 1960 | 22,169 | Fair |
| NW 9TH St over Dixon CR | 1985 | 20,182 | Fair |
All bridges nearby: Benton County, OR bridge conditions · every bridge in Benton County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.