Tanana Bridge Road over Boundry Slough
Fairbanks North Star Borough, Alaska · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tanana Bridge Road over Boundry Slough in Fairbanks North Star Borough, Alaska, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 3 (serious condition) on the 0-9 scale.
- It was built in 2012, making it 13 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2023).
- It is one of 6 of the 112 inventoried bridges in Fairbanks North Star Borough rated poor (5.4%); 6 (5.4%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (64.54328, -147.09008)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 3 | Serious condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 121 ft |
| Location | 1.4 Km W-sw Tanana R Br |
| NBI structure number | DAPPACTFTBEEBEE |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Alaska department of transportation.
Busiest bridges in Fairbanks North Star Borough
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Steese Highway over Chena River (steese Hwy) | 1977 | 23,300 | Fair |
| Johansen Expresswy over Geist Road Overhead | 1989 | 18,300 | Fair |
| Johansen Expresswy over Noyes Slough (geist Rd) | 1993 | 18,000 | Fair |
| Johansen Expresswy over Peger/geist Overcrossing | 1993 | 18,000 | Fair |
| Richardson Highway over Badger Loop U.c. | 2002 | 16,900 | Good |
| Richardson Highway over Rich Hwy Oh Mp 359 SB | 2024 | 16,900 | Good |
All bridges nearby: Fairbanks North Star Borough, AK bridge conditions · every bridge in Fairbanks North Star Borough · Alaska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.