US Bridges

ST133 Lowell ST over I 93

Fair

Essex County, Massachusetts · 1.2 MI S I 495 · Structure no. A090262YVDOTNBI

Built
1959
66 years old, rebuilt 1990
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
257 ft
4 main spans
Daily traffic
27,500
2024 count
Owner
State
State Highway Agency

About this bridge

ST133 Lowell ST over I 93 is a steel continuous stringer/multi-beam or girder carrying ST133 Lowell ST over I 93 in Essex County, Massachusetts. It was built in 1959 and reconstructed in 1990, so it is 66 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 27,500 vehicles a day, roughly 5% of them trucks, projected to reach 37,587 by 2031. The structure is 257 ft (78.3 m) long and 54 ft wide.

Location

Open in Google Maps
CarriesST133 Lowell ST
CrossesI 93
Location1.2 MI S I 495
RouteState Highway 133
CountyEssex County
StateMassachusetts
Coordinates42.6462, -71.18607
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.4 US tons
Inventory rating44.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length257 ft (78.3 m)
Longest span87 ft (26.5 m)
Deck width54 ft (16.4 m)
Roadway width45 ft (13.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,500 (2024)
Projected traffic37,587 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$12.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST133 Lowell ST over I 93 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1990.

What condition is ST133 Lowell ST over I 93 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 ST133 Lowell ST over I 93 carry?

About 27,500 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is ST133 Lowell ST over I 93?

The structure is 257 ft (78.3 m) long with a longest span of 87 ft (26.5 m) and a deck 54 ft wide.

Who owns ST133 Lowell ST over I 93?

It is owned by the State Highway Agency.