Structure 39 0113 · Merced County, CA
Carries State Route 33 over Parnell Bypass, 10-mer-033-21.47.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.
How ratings work23 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.
| State | California |
| County | Merced |
| Location | 10-mer-033-21.47 |
| Carries | State Route 33 |
| Crosses | Parnell Bypass |
| Coordinates | 37.17353, -121.01319 |
| Material | Concrete |
| Design | Slab |
| Total Length | 23.0 ft (7 m) |
| Max Span | 21.3 ft (6.5 m) |
| Deck Width | 40.7 ft (12.4 m) |
| Deck Area | 86.8 sq m |
| Main Spans | 1 |
| Year Built | 1920 (reconstructed 1973) |
| Avg Daily Traffic | 7,475 (2009) |
| Truck Traffic | 23% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 39 0113 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.