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Infrastructure Grade
Infrastructure Report Card
9.4% of bridges in poor condition
Total Bridges
5,310
Poor Condition
501(9.4%)
Avg Bridge Age
65 yrs
Trend
Declining
| Metric | Massachusetts | National Avg | Trend |
|---|---|---|---|
| % Poor Condition | 9.4% | 6.7% | Declining |
| vs. National Average | +2.7 pts | -- | -- |
| Average Bridge Age | 65 yrs | 48 yrs | -- |
| Good or Better | 1,880(35.4%) | -- | -- |
Grade Scale
Percentage of bridges in poor condition over time. The dashed line shows the national average for comparison.
Total Bridges
5,310
Poor Condition
501(9.4%)
Average Age
65 yrs
Daily Crossings
108.9M
Good or Better
1,880(35.4%)
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 |
|---|---|---|---|---|---|
| I 93 | Middlesex County | 6 | 7 | 5 | 266,500 |
| ST 3 | Norfolk County | 6 | 5 | 6 | 236,250 |
| I 93 /US1/ST3 | Suffolk County | 5 | 6 | 5 | 211,123 |
| I 91 | Hampden County | 5 | 6 | 6 | 210,733 |
| I 93 | Middlesex County | 6 | 5 | 5 | 208,231 |
| ST 3 | Norfolk County | 5 | 5 | 7 | 204,310 |
| I 93 /US1/ST3 | Suffolk County | 6 | 6 | 5 | 193,593 |
| I 93 /US1/ST3 | Suffolk County | 6 | 5 | 5 | 193,500 |
| I 93 | Middlesex County | 5 | 5 | 6 | 189,880 |
| I 93 | Essex County | 6 | 5 | 5 | 186,800 |
| I 93 /US1/ST3 | Norfolk County | 6 | 6 | 5 | 185,315 |
| I 93 | Middlesex County | 6 | 6 | 5 | 179,680 |
| I 95 /ST128 | Middlesex County | 5 | 5 | 5 | 178,839 |
| I 93 | Middlesex County | 5 | 6 | 5 | 176,618 |
| I 93 /US1/ST3 | Suffolk County | 6 | 5 | 5 | 173,365 |
The 10 bridges in poorest condition, ranked by lowest sufficiency rating.
over RR PVRR
over RR MBTA/CSX
over RR AMTRAK/MBTA
over RR GWRR
over WATER QUABOAG STREAM
over WATER DEERFIELD RIVER
over WATER MILL RIVER
over WATER SAWMILL RIVER
over LITTLE RIVER
over WATER HOUSATONIC RIVER
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.