ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta
PoorMiddlesex County, Massachusetts · At Int 16 S16 · Structure no. N120274QWDOTNBI
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 170 ft
- 3 main spans
- Daily traffic
- 18,491
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta is a steel stringer/multi-beam or girder carrying ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta in Middlesex County, Massachusetts. It was built in 1964, so it is 61 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 4 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 18,491 vehicles a day, roughly 7% of them trucks, projected to reach 21,478 by 2032. The structure is 170 ft (51.8 m) long and 94 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta built?
It was built in 1964, making it 61 years old in 2025.
What condition is ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta 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 July 2023.
How much traffic does ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta carry?
About 18,491 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta?
The structure is 170 ft (51.8 m) long with a longest span of 71 ft (21.5 m) and a deck 94 ft wide.
Who owns ST 16 Wb/Wshgtn ST over Comb I 90 & Csx/Mbta?
It is owned by the State Highway Agency.