US 20 over Henrys Fk. Snake River
Fair Condition51 years old6,500 vehicles/day
Location
| State | Idaho |
| County | Fremont |
| Location | At Macks Inn |
| Carries | US 20 |
| Crosses | Henrys Fk. Snake River |
| Coordinates | 44.50072, -111.33667 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 180.1 ft (54.9 m) |
| Max Span | 59.1 ft (18 m) |
| Deck Width | 60.0 ft (18.3 m) |
| Deck Area | 1004.7 sq m |
| Main Spans | 3 |
| Year Built | 1975 (reconstructed 2011) |
Traffic
| Avg Daily Traffic | 6,500 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000012685 |