US Bridges

HWY Berkeley ST over I 90

Fair

Suffolk County, Massachusetts · .32 KM S.Public Gardens S · Structure no. B160454TDDOTNBI

Built
1965
60 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
117 ft
2 main spans
Daily traffic
12,300
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Berkeley ST over I 90 is a steel stringer/multi-beam or girder carrying HWY Berkeley ST over I 90 in Suffolk County, Massachusetts. It was built in 1965, so it is 60 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 12,300 vehicles a day, roughly 1% of them trucks, projected to reach 31,428 by 2031. The structure is 117 ft (35.6 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Berkeley ST
CrossesI 90
Location.32 KM S.Public Gardens S
RouteInterstate 90
CountySuffolk County
StateMassachusetts
Coordinates42.34788, -71.07141
Functional classUrban Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.8 US tons
Inventory rating45.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length117 ft (35.6 m)
Longest span64 ft (19.4 m)
Deck width82 ft (25.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,300 (2023)
Projected traffic31,428 by 2031
Trucks1%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$8.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Berkeley ST over I 90 built?

It was built in 1965, making it 60 years old in 2025.

What condition is HWY Berkeley ST over I 90 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 August 2023.

How much traffic does HWY Berkeley ST over I 90 carry?

About 12,300 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is HWY Berkeley ST over I 90?

The structure is 117 ft (35.6 m) long with a longest span of 64 ft (19.4 m) and a deck 82 ft wide.

Who owns HWY Berkeley ST over I 90?

It is owned by the State Highway Agency.