Route 9 Southbound over Mattabesset River
FairMiddlesex County, Connecticut · 0.28 MI North of Route 66 · Structure no. 00641
- Built
- 1960
- 65 years old, rebuilt 2001
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 186 ft
- 2 main spans
- Daily traffic
- 34,600
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Route 9 Southbound over Mattabesset River is a steel stringer/multi-beam or girder carrying Route 9 Southbound over Mattabesset River in Middlesex County, Connecticut. It was built in 1960 and reconstructed in 2001, so it is 65 years old, older than the Connecticut average of 56.7 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 34,600 vehicles a day, roughly 8% of them trucks, projected to reach 51,412 by 2042. The structure is 186 ft (56.6 m) long and 57 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Route 9 Southbound over Mattabesset River built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2001.
What condition is Route 9 Southbound over Mattabesset 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 September 2023.
How much traffic does Route 9 Southbound over Mattabesset River carry?
About 34,600 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is Route 9 Southbound over Mattabesset River?
The structure is 186 ft (56.6 m) long with a longest span of 90 ft (27.4 m) and a deck 57 ft wide.
Who owns Route 9 Southbound over Mattabesset River?
It is owned by the State Highway Agency.