Dawson Rd over Muddy Creek Overflow
Benton County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Dawson Rd over Muddy Creek Overflow in Benton County, Oregon, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 723 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 50 of the 190 inventoried bridges in Benton County rated good (26.3%); 20 (10.5%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (44.36051, -123.31346)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 103 ft |
| Location | 1.2 Mi West of Hwy 99 W |
| NBI structure number | 14137A452 00123 |
| Condition class | Good |
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.