US Bridges

HWY Bay ST over I 495

Fair

Bristol County, Massachusetts · .4 MI E of Norton T.L. · Structure no. T010583YFDOTNBI

Built
1980
45 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
2 main spans
Daily traffic
16,571
2024 count
Owner
State
State Highway Agency

About this bridge

HWY Bay ST over I 495 is a steel continuous stringer/multi-beam or girder carrying HWY Bay ST over I 495 in Bristol County, Massachusetts. It was built in 1980, so it is 45 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 16,571 vehicles a day, roughly 9% of them trucks, projected to reach 38,535 by 2031. The structure is 244 ft (74.4 m) long and 93 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesHWY Bay ST
CrossesI 495
Location.4 MI E of Norton T.L.
RouteCity Street 0
CountyBristol County
StateMassachusetts
Coordinates41.96244, -71.12345
Functional classUrban Collector

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 inspectionDecember 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 rating85.2 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length244 ft (74.4 m)
Longest span118 ft (36 m)
Deck width93 ft (28.2 m)
Roadway width85 ft (25.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,571 (2024)
Projected traffic38,535 by 2031
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$20.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Bay ST over I 495 built?

It was built in 1980, making it 45 years old in 2025.

What condition is HWY Bay ST over I 495 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 December 2024.

How much traffic does HWY Bay ST over I 495 carry?

About 16,571 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is HWY Bay ST over I 495?

The structure is 244 ft (74.4 m) long with a longest span of 118 ft (36 m) and a deck 93 ft wide.

Who owns HWY Bay ST over I 495?

It is owned by the State Highway Agency.