US Bridges

ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB

Fair

Suffolk County, Massachusetts · Segment 1 · Structure no. B16590580MPANBI

Built
2003
22 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
465 ft
3 main spans
Daily traffic
—
Owner
State
State Highway Agency

About this bridge

ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB is a prestressed concrete continuous box beam or girders - single or spread carrying ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB in Suffolk County, Massachusetts. It was built in 2003, so it is 22 years old, younger 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.

No traffic count is recorded. The structure is 465 ft (141.6 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesST 1 A/Rp E-1AS
CrossesST 1 A/& Rp E-1ANB
LocationSegment 1
RouteState Highway 1A
CountySuffolk County
StateMassachusetts
Coordinates42.37301, -71.029
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.6 US tons
Inventory rating51.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length465 ft (141.6 m)
Longest span179 ft (54.6 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic—
Projected traffic—
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$24.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB built?

It was built in 2003, making it 22 years old in 2025.

What condition is ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB 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 November 2024.

How much traffic does ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB carry?

No traffic count is recorded for this structure.

How long is ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB?

The structure is 465 ft (141.6 m) long with a longest span of 179 ft (54.6 m) and a deck 32 ft wide.

Who owns ST 1 A/Rp E-1AS over ST 1 A/& Rp E-1ANB?

It is owned by the State Highway Agency.