US Bridges

I 93 NB/US1NB over ST 28 N Main ST

Fair

Norfolk County, Massachusetts · I 93 NB at ST 28 · Structure no. R01009358DOTNBI

Built
1958
67 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
163 ft
3 main spans
Daily traffic
129,100
2024 count
Owner
State
State Highway Agency

About this bridge

I 93 NB/US1NB over ST 28 N Main ST is a steel stringer/multi-beam or girder carrying I 93 NB/US1NB over ST 28 N Main ST in Norfolk County, Massachusetts. It was built in 1958, 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 129,100 vehicles a day, roughly 6% of them trucks, projected to reach 312,701 by 2031. The structure is 163 ft (49.7 m) long and 72 ft wide.

Location

Open in Google Maps
CarriesI 93 NB/US1NB
CrossesST 28 N Main ST
LocationI 93 NB at ST 28
RouteInterstate 93
CountyNorfolk County
StateMassachusetts
Coordinates42.20509, -71.06498
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionNovember 2024
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 alignment7: Better than present minimum criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span91 ft (27.7 m)
Deck width72 ft (22 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic129,100 (2024)
Projected traffic312,701 by 2031
Trucks6%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
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$10.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 NB/US1NB over ST 28 N Main ST built?

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

What condition is I 93 NB/US1NB over ST 28 N Main ST 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 I 93 NB/US1NB over ST 28 N Main ST carry?

About 129,100 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is I 93 NB/US1NB over ST 28 N Main ST?

The structure is 163 ft (49.7 m) long with a longest span of 91 ft (27.7 m) and a deck 72 ft wide.

Who owns I 93 NB/US1NB over ST 28 N Main ST?

It is owned by the State Highway Agency.