Structure 4109 · Ketchikan Gateway County, AK
Carries Franklin Road over Forks Creek No. 2, Mile Point 0.1.
A culvert 22 ft across. 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 | Alaska |
| County | Ketchikan Gateway |
| Location | Mile Point 0.1 |
| Carries | Franklin Road |
| Crosses | Forks Creek No. 2 |
| Coordinates | 55.30083, -131.52928 |
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Area | 44.9 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
| Avg Daily Traffic | 1,080 (2018) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
| Last Inspection | June 2023 |
| 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 | 4109 |
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.