Structure 420A1500003 · Houston County, TN
Carries Nfa A150 over Branch, Rocky Hollow Rd. In Erin..
A culvert 25 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 | Tennessee |
| County | Houston |
| Location | Rocky Hollow Rd. In Erin. |
| Carries | Nfa A150 |
| Crosses | Branch |
| Coordinates | 36.31480, -87.70605 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 60.0 sq m |
| Main Spans | 2 |
| Year Built | 1966 |
| Avg Daily Traffic | 1,640 (2020) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | February 2024 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 420A1500003 |
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.