ST 3 A/Morrsy Blv over Comb Neponset Ave&river
FairSuffolk County, Massachusetts · .2 MI E of I 93 · Structure no. B163904F7DOTNBI
- Built
- 1970
- 55 years old, rebuilt 2012
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 1,018 ft
- 9 main spans
- Daily traffic
- 76,500
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
ST 3 A/Morrsy Blv over Comb Neponset Ave&river is a steel stringer/multi-beam or girder carrying ST 3 A/Morrsy Blv over Comb Neponset Ave&river in Suffolk County, Massachusetts. It was built in 1970 and reconstructed in 2012, so it is 55 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 76,500 vehicles a day, roughly 2% of them trucks, projected to reach 63,962 by 2032. The structure is 1,018 ft (310.3 m) long and 99 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST 3 A/Morrsy Blv over Comb Neponset Ave&river built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2012.
What condition is ST 3 A/Morrsy Blv over Comb Neponset Ave&river in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.
How much traffic does ST 3 A/Morrsy Blv over Comb Neponset Ave&river carry?
About 76,500 vehicles per day (2019 count), of which roughly 2% are trucks.
How long is ST 3 A/Morrsy Blv over Comb Neponset Ave&river?
The structure is 1,018 ft (310.3 m) long with a longest span of 176 ft (53.6 m) and a deck 99 ft wide.
Who owns ST 3 A/Morrsy Blv over Comb Neponset Ave&river?
It is owned by the State Highway Agency.