ST146 SB Off Ramp over Water Blackstone River
GoodWorcester County, Massachusetts · At Exit 17 146SB · Structure no. M22044AHBDOTNBI
- Built
- 1998
- 27 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 108 ft
- 1 main span
- Daily traffic
- 52,912
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
ST146 SB Off Ramp over Water Blackstone River is a prestressed concrete stringer/multi-beam or girder carrying ST146 SB Off Ramp over Water Blackstone River in Worcester County, Massachusetts. It was built in 1998, so it is 27 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 52,912 vehicles a day, roughly 6% of them trucks, projected to reach 15,793 by 2032. The structure is 108 ft (32.9 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 ST146 SB Off Ramp over Water Blackstone River built?
It was built in 1998, making it 27 years old in 2025.
What condition is ST146 SB Off Ramp over Water Blackstone River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.
How much traffic does ST146 SB Off Ramp over Water Blackstone River carry?
About 52,912 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is ST146 SB Off Ramp over Water Blackstone River?
The structure is 108 ft (32.9 m) long with a longest span of 108 ft (32.8 m) and a deck 31 ft wide.
Who owns ST146 SB Off Ramp over Water Blackstone River?
It is owned by the State Highway Agency.