Boyson Road over I-380
Good Condition44 years old16,284 vehicles/day
Location
| State | Iowa |
| County | Linn |
| Location | 1.4 Mi. N Of Jct.100 |
| Carries | Boyson Road |
| Crosses | I-380 |
| Coordinates | 42.04521, -91.68522 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 248.0 ft (75.6 m) |
| Max Span | 81.0 ft (24.7 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 1088.6 sq m |
| Main Spans | 4 |
| Year Built | 1982 |
Traffic
| Avg Daily Traffic | 16,284 (2022) |
| Truck Traffic | 4% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000604740 |