Why did the truss bridge break up with the beam bridge? It needed more support.
Why did the truss bridge break up with the beam bridge? It needed more support.
Infrastructure Grade
Infrastructure Report Card
7.5% of bridges in poor condition
Total Bridges
1,660
Poor Condition
124(7.5%)
Avg Bridge Age
37 yrs
Trend
Stable
| Metric | Alaska | National Avg | Trend |
|---|---|---|---|
| % Poor Condition | 7.5% | 6.7% | Stable |
| vs. National Average | +0.8 pts | -- | -- |
| Average Bridge Age | 37 yrs | 48 yrs | -- |
| Good or Better | 1,137(68.5%) | -- | -- |
Grade Scale
Percentage of bridges in poor condition over time. The dashed line shows the national average for comparison.
Total Bridges
1,660
Poor Condition
124(7.5%)
Average Age
37 yrs
Daily Crossings
2.8M
Good or Better
1,137(68.5%)
These bridges have at least one major component rated "5" (Fair) — one step above the poor threshold. Sorted by daily traffic to highlight highest-impact structures at risk.
| Bridge | Location | Deck | Super | Sub | Daily Traffic |
|---|---|---|---|---|---|
| SEWARD HIGHWAY | Anchorage Municipality | 5 | 5 | 6 | 41,300 |
| DIMOND BLVD | Anchorage Municipality | 6 | 5 | 7 | 23,400 |
| GLENN HIGHWAY | Anchorage Municipality | 5 | 6 | 7 | 18,250 |
| GLENN HIGHWAY | Anchorage Municipality | 6 | 5 | 6 | 16,450 |
| PEGER ROAD | Fairbanks North Star Borough | 6 | 6 | 5 | 14,900 |
| SOUTH TONGASS HWY | Ketchikan Gateway Borough | 7 | 6 | 5 | 14,564 |
| PALMER-WASILL EXT | Matanuska-Susitna Borough | 7 | 7 | 5 | 14,000 |
| C STREET | Anchorage Municipality | 6 | 7 | 5 | 13,100 |
| EGAN DRIVE | Juneau City and Borough | 7 | 6 | 5 | 10,200 |
| EGAN DRIVE | Juneau City and Borough | 8 | 7 | 5 | 8,500 |
| EGAN DRIVE | Juneau City and Borough | 7 | 7 | 5 | 8,500 |
| SEWARD HIGHWAY | Anchorage Municipality | 6 | 6 | 5 | 6,860 |
| SOUTH TONGASS HWY | Ketchikan Gateway Borough | 7 | 5 | 6 | 6,850 |
| EAGLE RIVER ACCESS | Anchorage Municipality | 6 | 7 | 5 | 6,730 |
| DOUGLAS HIGHWAY | Juneau City and Borough | 7 | 5 | 8 | 6,160 |
The 10 bridges in poorest condition, ranked by lowest sufficiency rating.
over UNNAMED STREAM
over UNNAMED STREAM
over UNNAMED CREEK
over UNNAMED CREEK
over LITTLE CHENA RIVER
over WINDY CREEK RIGHT
over WILLOW CREEK
over UNNAMED CREEK
over UNNAMED CREED
over UNNAMED CREEK
States with similar infrastructure profiles, ranked by percentage of bridges in poor condition.
Grading: Grades are based on the percentage of bridges classified as "poor condition." A bridge is in poor condition when at least one major component (deck, superstructure, or substructure) is rated 4 or below on the NBI 0-9 scale.
Data Source: Federal Highway Administration (FHWA) National Bridge Inventory (NBI). Data is updated annually. BridgeStats is not affiliated with or endorsed by the FHWA.
Watchlist Criteria: Bridges with any component rated "5" (Fair) are one step from the poor threshold of 4 and are flagged for monitoring. These bridges are not yet in poor condition but may deteriorate without maintenance.