US Bridges

I 95 /ST128 over Other Mdc Aqueduct

Fair

Middlesex County, Massachusetts · 0.1 MI Nly Rt 30 · Structure no. W290242F3DOTNBI

Built
1950
75 years old, rebuilt 1962
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
150,095
2021 count
Owner
State
State Highway Agency

About this bridge

I 95 /ST128 over Other Mdc Aqueduct is a steel stringer/multi-beam or girder carrying I 95 /ST128 over Other Mdc Aqueduct in Middlesex County, Massachusetts. It was built in 1950 and reconstructed in 1962, so it is 75 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 150,095 vehicles a day, roughly 7% of them trucks, projected to reach 266,902 by 2032. The structure is 41 ft (12.5 m) long and 156 ft wide.

Location

Open in Google Maps
CarriesI 95 /ST128
CrossesOther Mdc Aqueduct
Location0.1 MI Nly Rt 30
RouteInterstate 128
CountyMiddlesex County
StateMassachusetts
Coordinates42.34495, -71.26267
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length41 ft (12.5 m)
Longest span36 ft (11 m)
Deck width156 ft (47.5 m)
Roadway width122 ft (37.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150,095 (2021)
Projected traffic266,902 by 2032
Trucks7%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 95 /ST128 over Other Mdc Aqueduct built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1962.

What condition is I 95 /ST128 over Other Mdc Aqueduct 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 March 2023.

How much traffic does I 95 /ST128 over Other Mdc Aqueduct carry?

About 150,095 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I 95 /ST128 over Other Mdc Aqueduct?

The structure is 41 ft (12.5 m) long with a longest span of 36 ft (11 m) and a deck 156 ft wide.

Who owns I 95 /ST128 over Other Mdc Aqueduct?

It is owned by the State Highway Agency.