HWY Auburn ST over Comb I 90 & Csx/Mbta
PoorMiddlesex County, Massachusetts · .16 KM S. ST 30 · Structure no. N120304QQDOTNBI
- Built
- 1964
- 61 years old, rebuilt 1995
- Condition
- Poor
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 185 ft
- 3 main spans
- Daily traffic
- 9,181
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
HWY Auburn ST over Comb I 90 & Csx/Mbta is a steel stringer/multi-beam or girder carrying HWY Auburn ST over Comb I 90 & Csx/Mbta in Middlesex County, Massachusetts. It was built in 1964 and reconstructed in 1995, 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 2 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 9,181 vehicles a day, roughly 1% of them trucks, projected to reach 4,738 by 2032. The structure is 185 ft (56.5 m) long and 62 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| 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 HWY Auburn ST over Comb I 90 & Csx/Mbta built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1995.
What condition is HWY Auburn 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 December 2023.
How much traffic does HWY Auburn ST over Comb I 90 & Csx/Mbta carry?
About 9,181 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is HWY Auburn ST over Comb I 90 & Csx/Mbta?
The structure is 185 ft (56.5 m) long with a longest span of 76 ft (23.3 m) and a deck 62 ft wide.
Who owns HWY Auburn ST over Comb I 90 & Csx/Mbta?
It is owned by the State Highway Agency.