Structure 8491 · San Juan Municipio County, PR
Carries Pr 842 over Arenas Creek, 5 Km North West Of Caguas.
A culvert 24 ft across with 2 openings. 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, so those are drawn as typical for a culvert.
| State | Puerto Rico |
| County | San Juan Municipio |
| Location | 5 Km North West Of Caguas |
| Carries | Pr 842 |
| Crosses | Arenas Creek |
| Coordinates | 18.30305, -66.06368 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 23.6 ft (7.2 m) |
| Max Span | 11.5 ft (3.5 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 62.6 sq m |
| Main Spans | 2 |
| Year Built | 1961 |
| Avg Daily Traffic | 4,100 (2017) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 008491 |
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.