US 20b over Henrys Fk. Snake River
Fair Condition61 years old11,500 vehicles/day
Location
| State | Idaho |
| County | Fremont |
| Location | In ST Anthony |
| Carries | US 20b |
| Crosses | Henrys Fk. Snake River |
| Coordinates | 43.96464, -111.68228 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 104.0 ft (31.7 m) |
| Max Span | 102.0 ft (31.1 m) |
| Deck Width | 65.9 ft (20.1 m) |
| Deck Area | 637.2 sq m |
| Main Spans | 1 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 11,500 (2023) |
| Truck Traffic | 2% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000012730 |