Highline Arrow Rd over Potlatch R(arrow Jct Br)
Nez Perce County, Idaho · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Highline Arrow Rd over Potlatch R(arrow Jct Br) in Nez Perce County, Idaho, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1920, making it 105 years old at the 2025 inventory.
- It carries about 90 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 3 of the 72 inventoried bridges in Nez Perce County rated poor (4.2%); 3 (4.2%) 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 5 to 4).
- Status change: newly posted for load since 2024.
- Its most recent inspection on record is dated September 2024, on a 12-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 → (46.47653, -116.76689)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 4 | Poor condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel through truss |
| Length | about 130 ft |
| Location | 2.2 N. 2.3 E. Spalding |
| NBI structure number | 000000000029845 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Idaho department of transportation.
Busiest bridges in Nez Perce County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SMA7344;BRYDEN Cyn over Snake R;high/southway Br | 1982 | 22,000 | Fair |
| US 12 over US 12;SNAKE River | 1939 | 21,000 | Fair |
| US 12 over Clearwater River;bnrr | 1951 | 21,000 | Fair |
| US 95 over Hatwai Creek | 1979 | 13,000 | Fair |
| US 95 over US 12;US 12-95 Ic | 1964 | 11,000 | Fair |
| US 12 over Aprroach Rd;catholic CR. | 1968 | 8,400 | Good |
All bridges nearby: Nez Perce County, ID bridge conditions · every bridge in Nez Perce County · Idaho bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.