US Bridges

I 495 SB over ST 9 Turnpike RD

Fair

Worcester County, Massachusetts · 1.5 Mi. N. of I-90 · Structure no. W240201U6DOTNBI

Built
1964
61 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
186 ft
2 main spans
Daily traffic
43,734
2023 count
Owner
State
State Highway Agency

About this bridge

I 495 SB over ST 9 Turnpike RD is a steel stringer/multi-beam or girder carrying I 495 SB over ST 9 Turnpike RD in Worcester County, Massachusetts. It was built in 1964, so it is 61 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 43,734 vehicles a day, roughly 9% of them trucks, projected to reach 67,910 by 2031. The structure is 186 ft (56.7 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI 495 SB
CrossesST 9 Turnpike RD
Location1.5 Mi. N. of I-90
RouteInterstate 495
CountyWorcester County
StateMassachusetts
Coordinates42.28874, -71.5676
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
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 rating67.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span62 ft (18.8 m)
Deck width58 ft (17.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,734 (2023)
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$9.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1964, making it 61 years old in 2025.

What condition is I 495 SB 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 SB over ST 9 Turnpike RD carry?

About 43,734 vehicles per day (2023 count), of which roughly 9% are trucks.

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

The structure is 186 ft (56.7 m) long with a longest span of 62 ft (18.8 m) and a deck 58 ft wide.

Who owns I 495 SB over ST 9 Turnpike RD?

It is owned by the State Highway Agency.