US Bridges

I 495 NB over ST 9 Turnpike RD

Fair

Worcester County, Massachusetts · 1 Mi.Nth.Of I-90 · Structure no. W240211U5DOTNBI

Built
1962
63 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
190 ft
4 main spans
Daily traffic
54,367
2021 count
Owner
State
State Highway Agency

About this bridge

I 495 NB over ST 9 Turnpike RD is a steel stringer/multi-beam or girder carrying I 495 NB over ST 9 Turnpike RD in Worcester County, Massachusetts. It was built in 1962, so it is 63 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 54,367 vehicles a day, roughly 9% of them trucks, projected to reach 67,910 by 2031. The structure is 190 ft (57.9 m) long and 56 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI 495 NB
CrossesST 9 Turnpike RD
Location1 Mi.Nth.Of I-90
RouteInterstate 495
CountyWorcester County
StateMassachusetts
Coordinates42.28877, -71.56626
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length190 ft (57.9 m)
Longest span63 ft (19.2 m)
Deck width56 ft (17.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic54,367 (2021)
Projected traffic67,910 by 2031
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$9.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 NB over ST 9 Turnpike RD built?

It was built in 1962, making it 63 years old in 2025.

What condition is I 495 NB over ST 9 Turnpike RD 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 2024.

How much traffic does I 495 NB over ST 9 Turnpike RD carry?

About 54,367 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is I 495 NB over ST 9 Turnpike RD?

The structure is 190 ft (57.9 m) long with a longest span of 63 ft (19.2 m) and a deck 56 ft wide.

Who owns I 495 NB over ST 9 Turnpike RD?

It is owned by the State Highway Agency.