ST 12 NB over HWY Neponset ST
PoorWorcester County, Massachusetts · .1 MI W of I-190 · Structure no. W441291KJDOTNBI
- Built
- 1977
- 48 years old
- Condition
- Poor
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 102 ft
- 1 main span
- Daily traffic
- 6,488
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
ST 12 NB over HWY Neponset ST is a prestressed concrete stringer/multi-beam or girder carrying ST 12 NB over HWY Neponset ST in Worcester County, Massachusetts. It was built in 1977, so it is 48 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 6,488 vehicles a day, roughly 6% of them trucks, projected to reach 19,267 by 2033. The structure is 102 ft (31.2 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 ST 12 NB over HWY Neponset ST built?
It was built in 1977, making it 48 years old in 2025.
What condition is ST 12 NB over HWY Neponset ST in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.
How much traffic does ST 12 NB over HWY Neponset ST carry?
About 6,488 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is ST 12 NB over HWY Neponset ST?
The structure is 102 ft (31.2 m) long with a longest span of 91 ft (27.6 m) and a deck 47 ft wide.
Who owns ST 12 NB over HWY Neponset ST?
It is owned by the State Highway Agency.