US Bridges

HWY Shirley Ave over TR Blue Line

Fair

Suffolk County, Massachusetts · 102 Ft West of Ocean Ave · Structure no. R050574U9MBTNBI

Built
1953
72 years old, rebuilt 1992
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
3,300
1997 count
Owner
State
Other State Agency

About this bridge

HWY Shirley Ave over TR Blue Line is a prestressed concrete box beam or girders - multiple carrying HWY Shirley Ave over TR Blue Line in Suffolk County, Massachusetts. It was built in 1953 and reconstructed in 1992, so it is 72 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 6 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 3,300 vehicles a day, roughly 5% of them trucks, projected to reach 5,212 by 2032. The structure is 44 ft (13.4 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Shirley Ave
CrossesTR Blue Line
Location102 Ft West of Ocean Ave
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.40725, -70.99253
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span41 ft (12.4 m)
Deck width60 ft (18.3 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (1997)
Projected traffic5,212 by 2032
Trucks5%
Lanes on structure3
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

OwnerOther State Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Shirley Ave over TR Blue Line built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1992.

What condition is HWY Shirley Ave 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 February 2023.

How much traffic does HWY Shirley Ave over TR Blue Line carry?

About 3,300 vehicles per day (1997 count), of which roughly 5% are trucks.

How long is HWY Shirley Ave over TR Blue Line?

The structure is 44 ft (13.4 m) long with a longest span of 41 ft (12.4 m) and a deck 60 ft wide.

Who owns HWY Shirley Ave over TR Blue Line?

It is owned by the Other State Agency.