SH 21 over Mores Cr;thorn Creek
Good Condition25 years old2,000 vehicles/day
Location
| State | Idaho |
| County | Boise |
| Location | 7.5 S. Idaho City |
| Carries | SH 21 |
| Crosses | Mores Cr;thorn Creek |
| Coordinates | 43.74683, -115.92314 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 82.0 ft (25 m) |
| Max Span | 79.4 ft (24.2 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 305 sq m |
| Main Spans | 1 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 2,000 (2023) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000012856 |