CR 18 Benton Co. over So Prong Spavinaw CR
Benton County, Arkansas · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 18 Benton Co. over So Prong Spavinaw CR in Benton County, Arkansas, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1965, making it 60 years old at the 2025 inventory.
- It carries about 3,424 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 196 of the 409 inventoried bridges in Benton County rated fair (47.9%); 10 (2.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: substructure 5 to 6.
- Its most recent inspection on record is dated January 2025, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (36.37349, -94.4118)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 58 ft |
| Location | 4 Mi NE Decatur |
| NBI structure number | 000000000017805 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2025 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arkansas department of transportation.
Busiest bridges in Benton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 49 Benton 1 over Spring Creek | 1982 | 108,000 | Fair |
| I 49 Benton 1 over Spring Creek | 1982 | 108,000 | Fair |
| I-49 Benton 2 over Ditch | 1982 | 92,000 | Fair |
| I-49 Benton 1 over Ditch | 1982 | 92,000 | Fair |
| MagnoliaSt Benton1 over I-49 | 2019 | 82,000 | Good |
| I 49 Benton 1 over Osage Creek | 1982 | 82,000 | Fair |
All bridges nearby: Benton County, AR bridge conditions · every bridge in Benton County · Arkansas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.