US Bridges

I 93 /US1/ST3 over HWY Morrissey Blvd

Fair

Suffolk County, Massachusetts · 4 MI S of JCT I90&I93 · Structure no. B162623DEDOTNBI

Built
1958
67 years old, rebuilt 1986
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
196 ft
2 main spans
Daily traffic
188,320
2022 count
Owner
State
State Highway Agency

About this bridge

I 93 /US1/ST3 over HWY Morrissey Blvd is a steel stringer/multi-beam or girder carrying I 93 /US1/ST3 over HWY Morrissey Blvd in Suffolk County, Massachusetts. It was built in 1958 and reconstructed in 1986, 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 6 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 188,320 vehicles a day, roughly 6% of them trucks, projected to reach 295,329 by 2032. The structure is 196 ft (59.7 m) long and 117 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI 93 /US1/ST3
CrossesHWY Morrissey Blvd
Location4 MI S of JCT I90&I93
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.30112, -71.04909
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
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 alignment8: Equal to present desirable criteria
Operating rating81.9 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length196 ft (59.7 m)
Longest span95 ft (29 m)
Deck width117 ft (35.7 m)
Roadway width110 ft (33.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic188,320 (2022)
Projected traffic295,329 by 2032
Trucks6%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$10 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 /US1/ST3 over HWY Morrissey Blvd built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1986.

What condition is I 93 /US1/ST3 over HWY Morrissey Blvd 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 September 2023.

How much traffic does I 93 /US1/ST3 over HWY Morrissey Blvd carry?

About 188,320 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I 93 /US1/ST3 over HWY Morrissey Blvd?

The structure is 196 ft (59.7 m) long with a longest span of 95 ft (29 m) and a deck 117 ft wide.

Who owns I 93 /US1/ST3 over HWY Morrissey Blvd?

It is owned by the State Highway Agency.