US Bridges

HWY Dorchstr Ave over I 93 /US1/ST3

Fair

Suffolk County, Massachusetts · 2.4 KM SE of Jet I93&I90 · Structure no. B16256398DOTNBI

Built
1957
68 years old, rebuilt 1988
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
216 ft
2 main spans
Daily traffic
10,100
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Dorchstr Ave over I 93 /US1/ST3 is a steel stringer/multi-beam or girder carrying HWY Dorchstr Ave over I 93 /US1/ST3 in Suffolk County, Massachusetts. It was built in 1957 and reconstructed in 1988, so it is 68 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 10,100 vehicles a day, roughly 8% of them trucks, projected to reach 19,899 by 2031. The structure is 216 ft (65.8 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Dorchstr Ave
CrossesI 93 /US1/ST3
Location2.4 KM SE of Jet I93&I90
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.32566, -71.05686
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.1 US tons
Inventory rating44.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length216 ft (65.8 m)
Longest span104 ft (31.7 m)
Deck width62 ft (18.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,100 (2024)
Projected traffic19,899 by 2031
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Dorchstr Ave over I 93 /US1/ST3 built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1988.

What condition is HWY Dorchstr Ave over I 93 /US1/ST3 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 HWY Dorchstr Ave over I 93 /US1/ST3 carry?

About 10,100 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is HWY Dorchstr Ave over I 93 /US1/ST3?

The structure is 216 ft (65.8 m) long with a longest span of 104 ft (31.7 m) and a deck 62 ft wide.

Who owns HWY Dorchstr Ave over I 93 /US1/ST3?

It is owned by the State Highway Agency.