INTERSTATE-91 SB over SR 510 (main Street)
FairHartford County, Connecticut · 0.4 MI N Windsor Locks Tl · Structure no. 06006
- Built
- 1959
- 66 years old, rebuilt 1989
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 144 ft
- 3 main spans
- Daily traffic
- 54,800
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
INTERSTATE-91 SB over SR 510 (main Street) is a steel continuous stringer/multi-beam or girder carrying INTERSTATE-91 SB over SR 510 (main Street) in Hartford County, Connecticut. It was built in 1959 and reconstructed in 1989, so it is 66 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 5 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 54,800 vehicles a day, roughly 9% of them trucks, projected to reach 81,427 by 2035. The structure is 144 ft (43.9 m) long and 71 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was INTERSTATE-91 SB over SR 510 (main Street) built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1989.
What condition is INTERSTATE-91 SB over SR 510 (main Street) 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 November 2023.
How much traffic does INTERSTATE-91 SB over SR 510 (main Street) carry?
About 54,800 vehicles per day (2015 count), of which roughly 9% are trucks.
How long is INTERSTATE-91 SB over SR 510 (main Street)?
The structure is 144 ft (43.9 m) long with a longest span of 64 ft (19.5 m) and a deck 71 ft wide.
Who owns INTERSTATE-91 SB over SR 510 (main Street)?
It is owned by the State Highway Agency.