US Bridges

I 93 SB over Other Relief

Fair

Suffolk County, Massachusetts · I93 · Structure no. B165099RPDOTNBI

Built
2000
25 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
203 ft
3 main spans
Daily traffic
108,879
2023 count
Owner
State
State Highway Agency

About this bridge

I 93 SB over Other Relief is a prestressed concrete continuous stringer/multi-beam or girder carrying I 93 SB over Other Relief in Suffolk County, Massachusetts. It was built in 2000, so it is 25 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 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 108,879 vehicles a day, roughly 5% of them trucks, projected to reach 132,819 by 2032. The structure is 203 ft (61.8 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 93 SB
CrossesOther Relief
LocationI93
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.34717, -71.06053
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating44.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length203 ft (61.8 m)
Longest span64 ft (19.5 m)
Deck width63 ft (19.3 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108,879 (2023)
Projected traffic132,819 by 2032
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 SB over Other Relief built?

It was built in 2000, making it 25 years old in 2025.

What condition is I 93 SB 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 March 2023.

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

About 108,879 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is I 93 SB over Other Relief?

The structure is 203 ft (61.8 m) long with a longest span of 64 ft (19.5 m) and a deck 63 ft wide.

Who owns I 93 SB over Other Relief?

It is owned by the State Highway Agency.