HWY Walnut ST over Comb I 90 & Csx/Mbta
PoorMiddlesex County, Massachusetts · .8 KM S. Charles Rv S23 · Structure no. N120214R2DOTNBI
- Built
- 1964
- 61 years old, rebuilt 1994
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 149 ft
- 3 main spans
- Daily traffic
- 19,784
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
HWY Walnut ST over Comb I 90 & Csx/Mbta is a steel stringer/multi-beam or girder carrying HWY Walnut ST over Comb I 90 & Csx/Mbta in Middlesex County, Massachusetts. It was built in 1964 and reconstructed in 1994, 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 19,784 vehicles a day, roughly 2% of them trucks, projected to reach 21,478 by 2031. The structure is 149 ft (45.3 m) long and 102 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY Walnut ST over Comb I 90 & Csx/Mbta built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.
What condition is HWY Walnut 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 November 2024.
How much traffic does HWY Walnut ST over Comb I 90 & Csx/Mbta carry?
About 19,784 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is HWY Walnut ST over Comb I 90 & Csx/Mbta?
The structure is 149 ft (45.3 m) long with a longest span of 52 ft (16 m) and a deck 102 ft wide.
Who owns HWY Walnut ST over Comb I 90 & Csx/Mbta?
It is owned by the State Highway Agency.