INTERSTATE-91 SB over State ST Mill Riv Ramps
FairNew Haven County, Connecticut · 1.4 MI N of I-95 · Structure no. 03015A
- Built
- 1965
- 60 years old, rebuilt 2001
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,044 ft
- 3 main spans
- Daily traffic
- 63,400
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
INTERSTATE-91 SB over State ST Mill Riv Ramps is a steel continuous stringer/multi-beam or girder carrying INTERSTATE-91 SB over State ST Mill Riv Ramps in New Haven County, Connecticut. It was built in 1965 and reconstructed in 2001, so it is 60 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 63,400 vehicles a day, roughly 9% of them trucks, projected to reach 94,206 by 2042. The structure is 1,044 ft (318.2 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was INTERSTATE-91 SB over State ST Mill Riv Ramps built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2001.
What condition is INTERSTATE-91 SB over State ST Mill Riv Ramps 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 2024.
How much traffic does INTERSTATE-91 SB over State ST Mill Riv Ramps carry?
About 63,400 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is INTERSTATE-91 SB over State ST Mill Riv Ramps?
The structure is 1,044 ft (318.2 m) long with a longest span of 114 ft (34.7 m) and a deck 68 ft wide.
Who owns INTERSTATE-91 SB over State ST Mill Riv Ramps?
It is owned by the State Highway Agency.