ST146 NB over Water Blackstone River
GoodWorcester County, Massachusetts · .1 Mi. N. of U.S.-20 · Structure no. M22059AJ1DOTNBI
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 671 ft
- 4 main spans
- Daily traffic
- 21,856
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
ST146 NB over Water Blackstone River is a steel continuous stringer/multi-beam or girder carrying ST146 NB over Water Blackstone River in Worcester County, Massachusetts. It was built in 1997, so it is 28 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 21,856 vehicles a day, roughly 6% of them trucks, projected to reach 45,800 by 2032. The structure is 671 ft (204.4 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST146 NB over Water Blackstone River built?
It was built in 1997, making it 28 years old in 2025.
What condition is ST146 NB 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 November 2023.
How much traffic does ST146 NB over Water Blackstone River carry?
About 21,856 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is ST146 NB over Water Blackstone River?
The structure is 671 ft (204.4 m) long with a longest span of 172 ft (52.5 m) and a deck 52 ft wide.
Who owns ST146 NB over Water Blackstone River?
It is owned by the State Highway Agency.