SB I-29 over Boyer River
Fair Condition68 years old10,050 vehicles/day
Location
| State | Iowa |
| County | Harrison |
| Location | 3.0 Mi. S Of Jct. US 30 |
| Carries | SB I-29 |
| Crosses | Boyer River |
| Coordinates | 41.50893, -95.90665 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 414.0 ft (126.2 m) |
| Max Span | 160.1 ft (48.8 m) |
| Deck Width | 44.6 ft (13.6 m) |
| Deck Area | 1716.3 sq m |
| Main Spans | 3 |
| Year Built | 1958 (reconstructed 2009) |
Traffic
| Avg Daily Traffic | 10,050 (2022) |
| Truck Traffic | 28% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000028070 |