US Bridges

HWY Bnningtn ST over TR Blue Line

Fair

Suffolk County, Massachusetts · Over Blue Line · Structure no. B162154VUMBTNBI

Built
1961
64 years old, rebuilt 2010
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
151 ft
1 main span
Daily traffic
17,300
2012 count
Owner
State
Other State Agency

About this bridge

HWY Bnningtn ST over TR Blue Line is a steel stringer/multi-beam or girder carrying HWY Bnningtn ST over TR Blue Line in Suffolk County, Massachusetts. It was built in 1961 and reconstructed in 2010, so it is 64 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 17,300 vehicles a day, roughly 6% of them trucks, projected to reach 31,428 by 2032. The structure is 151 ft (46.1 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Bnningtn ST
CrossesTR Blue Line
LocationOver Blue Line
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.38843, -71.00023
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating52.2 US tons
Inventory rating31.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length151 ft (46.1 m)
Longest span95 ft (29 m)
Deck width80 ft (24.4 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,300 (2012)
Projected traffic31,428 by 2032
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Bnningtn ST over TR Blue Line built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2010.

What condition is HWY Bnningtn ST over TR Blue Line in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2023.

How much traffic does HWY Bnningtn ST over TR Blue Line carry?

About 17,300 vehicles per day (2012 count), of which roughly 6% are trucks.

How long is HWY Bnningtn ST over TR Blue Line?

The structure is 151 ft (46.1 m) long with a longest span of 95 ft (29 m) and a deck 80 ft wide.

Who owns HWY Bnningtn ST over TR Blue Line?

It is owned by the Other State Agency.