US Bridges

HWY River ST over RR MBTA

Good

Suffolk County, Massachusetts · 30 M W. of Thorn ST · Structure no. B16167AQFDOT634

Built
2012
13 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
19,100
2024 count
Owner
State
State Highway Agency

About this bridge

HWY River ST over RR MBTA is a steel stringer/multi-beam or girder carrying HWY River ST over RR MBTA in Suffolk County, Massachusetts. It was built in 2012, so it is 13 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 19,100 vehicles a day, roughly 1% of them trucks. The structure is 62 ft (18.8 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY River ST
CrossesRR MBTA
Location30 M W. of Thorn ST
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.26361, -71.10461
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.9 US tons
Inventory rating53.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length62 ft (18.8 m)
Longest span55 ft (16.9 m)
Deck width55 ft (16.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,100 (2024)
Projected traffic—
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$535,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY River ST over RR MBTA built?

It was built in 2012, making it 13 years old in 2025.

What condition is HWY River ST over RR MBTA 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 September 2024.

How much traffic does HWY River ST over RR MBTA carry?

About 19,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is HWY River ST over RR MBTA?

The structure is 62 ft (18.8 m) long with a longest span of 55 ft (16.9 m) and a deck 55 ft wide.

Who owns HWY River ST over RR MBTA?

It is owned by the State Highway Agency.