HWY River ST over Water Mother Brook
GoodSuffolk County, Massachusetts · .16 KM W of Knight ST · Structure no. B161874EJDOTNBI
- Built
- 1976
- 49 years old, rebuilt 2008
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 75 ft
- 1 main span
- Daily traffic
- 17,198
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
HWY River ST over Water Mother Brook is a steel stringer/multi-beam or girder carrying HWY River ST over Water Mother Brook in Suffolk County, Massachusetts. It was built in 1976 and reconstructed in 2008, so it is 49 years old, younger than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 17,198 vehicles a day, roughly 8% of them trucks, projected to reach 27,638 by 2032. The structure is 75 ft (22.9 m) long and 54 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY River ST over Water Mother Brook built?
It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2008.
What condition is HWY River ST over Water Mother Brook in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.
How much traffic does HWY River ST over Water Mother Brook carry?
About 17,198 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is HWY River ST over Water Mother Brook?
The structure is 75 ft (22.9 m) long with a longest span of 50 ft (15.2 m) and a deck 54 ft wide.
Who owns HWY River ST over Water Mother Brook?
It is owned by the State Highway Agency.