ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx
PoorSuffolk County, Massachusetts · .1 MI S.Pru Center S57 · Structure no. B160494T8DOTNBI
- Built
- 1965
- 60 years old
- Condition
- Poor
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 307 ft
- 5 main spans
- Daily traffic
- 19,200
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx is a steel stringer/multi-beam or girder carrying ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx in Suffolk County, Massachusetts. It was built in 1965, so it is 60 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 19,200 vehicles a day, roughly 3% of them trucks, projected to reach 31,428 by 2032. The structure is 307 ft (93.6 m) long and 123 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx built?
It was built in 1965, making it 60 years old in 2025.
What condition is ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.
How much traffic does ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx carry?
About 19,200 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx?
The structure is 307 ft (93.6 m) long with a longest span of 79 ft (24.1 m) and a deck 123 ft wide.
Who owns ST 9 Huntingtn Av over Comb I 90 & Mbta/Csx?
It is owned by the State Highway Agency.