US Bridges

I 93 SB on Ramp over Other Relief

Fair

Suffolk County, Massachusetts · 2 MI S of JCT I90&I93 · Structure no. B162593EHDOTNBI

Built
1958
67 years old, rebuilt 1984
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
512 ft
6 main spans
Daily traffic
15,647
2023 count
Owner
State
State Highway Agency

About this bridge

I 93 SB on Ramp over Other Relief is a steel stringer/multi-beam or girder carrying I 93 SB on Ramp over Other Relief in Suffolk County, Massachusetts. It was built in 1958 and reconstructed in 1984, so it is 67 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 15,647 vehicles a day, roughly 5% of them trucks, projected to reach 33,698 by 2032. The structure is 512 ft (156.1 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesI 93 SB on Ramp
CrossesOther Relief
Location2 MI S of JCT I90&I93
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.31973, -71.05288
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating74.5 US tons
Inventory rating44.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length512 ft (156.1 m)
Longest span85 ft (25.9 m)
Deck width29 ft (8.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,647 (2023)
Projected traffic33,698 by 2032
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$13.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 SB on Ramp over Other Relief built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1984.

What condition is I 93 SB on Ramp over Other Relief 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 December 2023.

How much traffic does I 93 SB on Ramp over Other Relief carry?

About 15,647 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is I 93 SB on Ramp over Other Relief?

The structure is 512 ft (156.1 m) long with a longest span of 85 ft (25.9 m) and a deck 29 ft wide.

Who owns I 93 SB on Ramp over Other Relief?

It is owned by the State Highway Agency.