ST 3 Nb/Memorl DR over Water Charles River
PoorPosted for loadMiddlesex County, Massachusetts · Just S of Longfellow Br · Structure no. C010394DNDOTNBI
- Built
- 1956
- 69 years old
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 512 ft
- 13 main spans
- Daily traffic
- 18,750
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
ST 3 Nb/Memorl DR over Water Charles River is a prestressed concrete stringer/multi-beam or girder carrying ST 3 Nb/Memorl DR over Water Charles River in Middlesex County, Massachusetts. It was built in 1956, so it is 69 years old, older 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. Its operating status is: posted for other load-capacity restriction.
It carries about 18,750 vehicles a day, roughly 1% of them trucks, projected to reach 25,269 by 2031. The structure is 512 ft (156.1 m) long and 42 ft wide.
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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST 3 Nb/Memorl DR over Water Charles River built?
It was built in 1956, making it 69 years old in 2025.
What condition is ST 3 Nb/Memorl DR over Water Charles River 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 June 2024.
How much traffic does ST 3 Nb/Memorl DR over Water Charles River carry?
About 18,750 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is ST 3 Nb/Memorl DR over Water Charles River?
The structure is 512 ft (156.1 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.
Who owns ST 3 Nb/Memorl DR over Water Charles River?
It is owned by the State Highway Agency.